June 18, 2020

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Considering the seasons...

The botanical-style aquarium challenges us. 

It forces us to look at things a bit differently. To accept a different look, a different function, and to embrace Nature in a more intimate way in our aquariums that we typically do.

And, in order to make sense of it all, we spend a great deal of time examining the processes which occur when leaves and other botanicals are added to the aquarium.

And this is important, not only from an aesthetic standpoint, but from a functional/operational standpoint.

It definitely differs from our hobby practice in decades past, where the idea of throwing in materials that affect the water quality/composition was strictly a practice reserved for speciality hobbyists, like killifish breeders, Dwarf Cichlid keepers, etc., who wanted to create special conditions for breeding.

Nowadays, we're advocating the addition of such materials to our aquariums as a matter of course, for the everyday purpose of replicating natural processes for our fishes. We understand- or are attempting to understand- the impact on both our aquariums' ecology and the husbandry involved.

Yeah, sort of a different approach.

We add a lot of biological material to our tanks in the form of leaves and botanicals- perfectly analogous to the process of allochonous inputmaterial is something imported into an ecosystem from outside of it. Exactly what happens in the tropical streams and rivers that some of us obsess over!

There's been a fair amount of research and speculation by both scientists and hobbyists about the processes which occur when terrestrial materials like leaves and botanical items enter aquatic environments, and most of it is based upon field observations.

As hobbyists, we have a unique opportunity to observe firsthand the impact and affects of this material in our own aquariums! I love this aspect of our "practice", as it creates really interesting possibilities to embrace and create more naturally-functioning systems, while possibly even "validating" the field work done by scientists!

And of course, there are a lot of interesting bits of information that we can interpret from Nature when planning, creating, and operating our aquariums.

It goes without saying that there are implications for both the biology and chemistry of the aquatic habitats when leaves and other botanical materials enter them. Many of these are things that we as hobbyists observe every day in our aquariums!

Example?

A lab study I came upon found out that, when leaves are saturated in water, biofilm is at it's peak when other nutrients (i.e.; nitrate, phosphate, etc.) tested at their lowest limits. This is interesting to me, because it seems that, in our botanical-style, blackwater aquariums, biofilms tend to occur early on, when one would assume that these compounds are at their highest concentrations, right? And biofilms are essentially the byproduct of bacterial colonization, meaning that there must be a lot of "food" for the bacteria at some point if there is a lot of biofilm, right?

More questions...

Does this imply that the biofilms arrive on the scene and peak out really quickly; an indication that there is actually less nutrient in the water? Is the nutrient bound up in the biofilms? And when our fishes and other animals consume them, does this provide a significant source of sustenance for them?

Hmm...?

Oh, and here is another interesting observation:

When leaves fall into streams, field studies have shown that their nitrogen content typically will increase. Why is this important? Scientists see this as evidence of microbial colonization, which is correlated by a measured increase in oxygen consumption. This is interesting to me, because the rare "disasters" that we see in our tanks (when we do see them, of course, which fortunately isn't very often at all)- are usually caused by the hobbyist adding a really large quantity of leaves at once, resulting in the fishes gasping at the surface- a sign of...oxygen depletion?

Makes sense, right? 

These are interesting clues about the process of decomposition of leaves when they enter into our aquatic ecosystems. They have implications for our use of botanicals and the way we manage our aquariums. I think that the simple fact that pH and oxygen tend to go down quickly when leaves are  initially submerged in pure water during lab tests gives us an idea as to what to expect.

A lot of the initial environmental changes will happen rather rapidly, and then stabilize over time. Which of course, leads me to conclude that the development of sufficient populations of organisms to process the incoming botanical load is a critical part of the establishment of our botanical-style aquariums.

Fungal populations are as important in the process of breaking down leaves and botanical materials in water as are higher organisms, like insects and crustaceans, which function as "shredders." So the “shredders” – the animals which feed upon the materials that fall into the streams, process this stuff into what scientists call “fine particulate organic matter.”

And that's where fungi and other microorganisms  make use of the leaves and materials, processing them into fine sediments. Allochthonous material can also include dissolved organic matter (DOM) carried into streams and re-distributed by water movement.

And the process happens surprisingly quickly.

In experiments carried out in tropical  rainforests in Venezuela, decomposition rates were really fast, with 50% of leaf mass lost in less than 10 days! Interesting, but is it tremendously surprising to us as botanical-style aquarium enthusiasts? I mean, we see leaves begin to soften and break down in a matter of a couple of weeks- with complete breakdown happening typically in a month or so for many leaves. And biofilms, fungi, and algae are still found in our aquariums in significant quantities throughout the process.

So, what's this all mean? What are the implications for aquariums? 

I think it means that we need to continue to foster the biological diversity of animals in our aquariums- embracing life at all levels- from bacteria to fungi to crustaceans to worms, and ultimately, our fishes...All forming the basis of a closed ecosystem, and perhaps a "food web" of sorts for our little aquatic microcosms. It's a very interesting  concept- a fascinating field for research for aquarists, and we all have the opportunity to participate in this on a most intimate level by simply observing what's happening in our aquariums every day!

Diversity is interesting enough, but when you factor in seasonal changes and cycles, it becomes an almost "foundational" component for a new way of running our botanical-style aquariums.

Consider this:

The wet season in The Amazon runs from November to June. And it rains almost every day.

And what's really interesting is that the surrounding Amazon rain forest is estimated by some scientists to create as much as 50% of its own precipitation! It does this via the humidity present in the forest itself, from the water vapor present on plant leaves- which contributes to the formation of rain clouds.

Yeah, trees in the Amazon release enough moisture through photosynthesis to create low-level clouds and literally generate rain, according to a recent study published in the Proceedings of the National Academy of Sciences (U.S.)!

That's crazy.

But it makes a lot of sense, right?

Okay, that's a cool "cocktail party sound bite" and all, but what happens to the (aquatic) environment in which our fishes live in when it rains?

Well, for one thing, rain performs the dual function of diluting organics, while transporting more nutrient and materials across the ecosystem. What happens in many of the regions of Amazonia - and likewise, in many tropical locales worldwide-is the evolution of our most compelling environmental niches...

The water levels in the rivers rise significantly- often several meters, and the once dry forest floor fills with water from the torrential rain and overflowing rivers and streams. In Amazonia, it means one thing:

The Igapos are formed. 

All of the botanical material- fallen leaves, branches, seed pods, and such, is suddenly submerged. And of course, currents re-distribute this material into little pockets and "stands", affecting the (now underwater) "topography" of the landscape. Leaves begin to accumulate. Tree branches tumble along the substrate  Soils dissolve their chemical constituents, tannins, and humic acids into the water, enriching it. Fungi and micororganisms begin to multiply, feed on and break down the materials. Biofilms form, crustaceans reproduce rapidly.  Fishes are able to find new food sources; new hiding places..new areas to spawn.

Life flourishes.

So, yeah, the rains have a huge impact on tropical aquatic ecosystems. And it's important to think of the relationship between the terrestrial habitat and the aquatic one when visualizing the possibilities of replicating nature in your aquarium in this context.

This is huge, important stuff that any real "natural aquascaping" enthusiast needs to get his/her head around. 

It's an intimate, interrelated, and perhaps even "codependent" sort of arrangement!

And of course, I think we can work with this stuff to our fishes' advantage!

We've talked about the idea of "flooding" a vivarium-type setup designed to replicate an Amazonian forest before. You know, sort of attempting to simulate some of the processes which happen seasonally in Nature. With the technology, materials, and information available to us today, the capability of creating a true "year-round" habitat simulation in the confines of an aquarium/vivarium setup has never been more attainable.

The time to play with this concept is now!

Sure, you'd need to create a technical means or set of procedures to gradually flood your "rainforest floor" in your tank, which could be accomplished manually, by simply pouring water into the vivarium over a series of days; or automatically, with solenoids controlling valves from a reservoir beneath the setup, or perhaps employing the "rain heads" that frog and herp people use in their systems. This is all very achievable, even for hobbyists like me with limited "DIY" skills.

You just have to innovate, and be willing to do a little work and experimentation.

And, you have to accept some new and very different aesthetics. You have to understand that when you flood a soil/clay/sediment-based substrate with water, it's going to be turbid. It's going to not be crystal clear and "aquarium culture perfect" in appearance.

When you make the mental shifts, you can just ponder the possibilities here! It's crazy!

As the display "floods", the materials in the formerly "terrestrial" environment become submerged- just like in Nature- releasing nutrients, humic substances, and tannins, creating a rich, dynamic habitat for fishes, offering many of the same benefits as you'd expect from the wild environment.

Recreating a "365 dynamic" environment in an aquatic feature would perhaps be the ultimate expression of an operational biotope-inspired aquarium- Truly mimicking the composition, aesthetics- and function of the natural habitat. A truly realistic representation of the wild, on a level previously not possible.

No more of that "diorama" bullshit.

Of course, I have no illusions about this being a rather labor-intensive process, fraught with a few technical challenges- but it's not necessary to make it complicated or difficult.

You'll have to be patient and make smaller, slower, incremental moves...I mean, you're starting out with a "dry" aquarium- a representation of a forest floor or grassland, letting it thrive- and then flooding it.

It does require some "active management", planning, and diligence- but on the surface, executing seems no more difficult than with some of the other aquatic systems we dabble with, right?

The transformation of dry forest floors into aquatic habitats provides a tremendous amount if inspiration AND biological diversity and activity for both the natural environment and our aquariums.

As always, it's best to look to Nature for your inspiration. You simply won't find much in the way of aquariums created to replicate these habitats and processes just yet.

And, man- Nature provides some really incredible inspiration for this stuff, doesn't it?

Flood pulses in these habitats easily enable large-scale "transfers" of nutrients and food items between the terrestrial and aquatic environment. This is of huge importance to the ecosystem. As we've touched on before, aquatic food webs in the Amazon area (and in other tropical ecosystems) are very strongly influenced by the input of terrestrial materials, and this is really an important point for those of us interested in creating more natural aquatic displays and microcosms for the fishes we wish to keep.

Characins, catfishes, dwarf cichlids, annual killifish- all have unique relationships with these habitats, which we can replicate, study, and interpret. They respond to the seasonal changes almost predictably.

And the seasonality in these wild aquatic habitats is perhaps the one feature that we as aquarists have yet to fully embrace and study. It's fascinating, intriguing...and dramatic, in many cases!

What can we learn from these seasonal inundations?

Well, for one thing, we can observe the diets of our fishes.

In general, fish, detritus and insects form the most important food resources supporting the fish communities in both wet and dry seasons, but the proportions of invertebrates fruits, and fish are reduced during the low water season. Individual fish species exhibit diet changes between high water and low water seasons in these areas...an interesting adaptation and possible application for hobbyists?

Well, think about the results from one study of gut-content analysis form some herbivorous Amazonian fishes in both the wet and dry seasons: The consumption of fruits in Mylossoma and Colossoma species was significantly less during the low water periods, and  their diet was changed, with these materials substituted by plant parts and invertebrates, which were more abundant.

Fruit-eating is significantly reduced during the low water period when the fruit sources in the forests are not readily accessible to the fish. During these periods of time, fruit eating fishes ("frugivores") consume more seeds than fruits, and supplement their diets with foods like as leaves, detritus, and plankton. Interestingly, even the known "gazers", like Leporinus,  were found to consume a greater proportion of materials like seeds during the low water season.

Mud and algal growth on plants, rocks, submerged trees, etc. is quite abundant in these waters at various times of the year. Mud and detritus are transported via the overflowing rivers into flooded areas, and contribute to the forest leaf litter and other botanical materials, coming nutrient sources which contribute to the growth of this epiphytic algae. 

During the lower water periods, this "organic layer" helps compensate for the shortage of other food sources. When the water is at a high period and the forests are inundated, many terrestrial insects fall into the water and are consumed by fishes. In general, insects- both terrestrial and aquatic, support a large community of fishes.

So, it goes without saying that the importance of insects and fruits- which are essentially derived from the flooded forests, are reduced during the dry season when fishes are confined to open water and feed on different materials. 

So I wonder...is part of the key to successfully conditioning and breeding some of the fishes found in these habitats altering their diets to mimic the seasonal importance/scarcity of various food items? In other words, feeding more insects at one time of the year, and perhaps allowing fishes to graze on detritus and biocover at other times?

Is the concept of creating a seasonally-influenced,  "food-producing" aquarium, complete with detritus, natural mud, and an abundance of decomposing botanical materials, a key to creating a more true realistic feeding dynamic, as well as an "aesthetically functional" aquarium?

I'm fairly certain that this idea will make me even less popular with some in the so-called "Nature Aquarium" crowd, which, in my opinion, has sort of appropriated the descriptor while really embracing only one aspect of nature (i.e.; plants)...Hey, I love the look of many of those tanks as much as anyone...but let's face it, a truly "natural" aquarium needs to embrace stuff like detritus, mud, decomposing botanical materials, varying water tint and clarity, etc.

If you are intrigued by that, and not frightened of the looks and operational considerations, you'll love NatureBase "Igapo" substrate. After over a year of testing, it's now weeks away from release...It'll challenge you. It'll create turbidity. It'll color the water. It'll grow terrestrial grasses. It will foster biofilm formation. It'll get your creative juices flowing. 

And we think it will reinforce the idea of what we mean by "functional aesthetics."

The aesthetics might not be everyone's cup of tea, but the possibilities for creating more self-sustaining, ecologically sound microcosms are numerous, and the potential benefits for fishes are many. Creating aquariums based on specific natural functions and benefits is something that I can't resist.

And, since a few of you asked...THAT is where Tannin is headed in the second half of 2020 and into next year. A new approach. A different look, products that might have you scratching your head in sheer terror AND delight! We're going to do a lot more pushing out into the margins of what is considered "normal" in the hobby. 

And that's just where we like to be.

Stay excited. Stay focused. Stay inspired. Stay creative. Stay tuned...

And Stay Wet.

 

Scott Fellman

Tannin Aquatics 

 

June 17, 2020

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The impact of the land...the concept of terroir-and the nuances of Nature.

To me, perhaps one of the most elegant and compelling aspects of Nature is how the aquatic environments we love are so profoundly influenced by the terrestrial habitats which surround them. 

There is a remarkable similarity between this intimate land/water relationship, and the world that we can create in our aquariums.

Every aquarium that we assemble is not only a unique expression of our interests and skills- it's a complex, ecologically functional microcosm, which is impacted by not only the way we assemble the life forms, but how we utilize them.

And of course, being the self-appointed "World's most prolific aquarium hobby philosopher,"  I have spent a fair amount of time ruminating on the idea, attempting to grasp the concept.

I think it simply starts with the materials that we use in our aquairums.

It is perfectly logical to imply that botanicals, wood, and other materials which we ultiize in our aquascapes not only have an aesthetic impact, but a consequential physical-chemical impact on the overall aquatic environment, as well.

We know this, because we see their impact on natural aquatic systems all the time, don't we? Every flooded forest, inundated Terre Firme grassland, every overflowing stream- provides a perfect example for us to study.

The land influences the water.

Each component of the terrestrial habitat has some unique impact on the aquatic habitat. Not really difficult to grasp, when you think about it in the context of stuff we know and love in other areas of life.

Wine, for example, has "terroir"- the environmental conditions, especially soil and climate, in which grapes are grown and that give a wine its unique flavor and aroma...  Coffee also acquires traits that are similar:  Tangible effects and characteristics, which impact the experience we get from them.

And of course,  I can't help but wonder if this same idea applies to our botanicals?

It must!

Sure, it does.

I mean, leaves come from specific trees, imparting not only tannins and humic substances into the water, but likely falling in heavier concentrations, or accumulating in various parts of rain forest streams or inundated forest floors at particular times of the year, or in specific physical locales with in a stream or river. And of course, they provide the fishes which reside in that given area a specific set of physical/chemical conditions, which they have adapted to over time. 

Is this not the very definition of "terroir?"

Yeah, sort of...right? 

Actually, the idea makes perfect sense.

As we've discussed before, the soils, plants, and surrounding geography of an aquatic habitat play an important and intricate role in the composition of the aquatic environment. They influence not only the chemical characteristics of the water (like pH, TDS, alkalinity), but the color (yeah- tannins!), turbidity, and other characteristics, like the water flow. Large concentrations become physical structures in the course of a stream or river that affect the course of the water.

And of course, they also have important impact on the diet of fishes...Remember allochthonous input form the land surrounding aquatic habitats? And the impact of humic substances?

I can't help but wonder what sorts of specific environmental variations we can create in our aquarium habitats; that is to say, "variations" of the chemical composition of the water in our aquarium habitats- by employing various different types and combinations of botanicals and aquatic soils.

I mean, on the surface, this is not a revolutionary idea...We've been doing stuff like this in the hobby for a while- more crudely in the fish-breeding realm (adding peat to water, for example...), or with aragonite substrates in Africa Rift Lake cichlid tanks, or with mineral additions to shrimp habitats, etc.

In the planted aquarium world, it's long been known that soil types/additives, ie;  clay-based aquatic soils, for example, will obviously impact the water chemistry of the aquarium far differently than say, iron-based soils, and thusly, their effect on the plants, fishes, and, as a perhaps unintended) side consequence, the overall aquatic environment will differ significantly as a result.

So, it pretty much goes without saying that the idea that utilizing different types of botanical materials in the aquarium can likely yield different effects on the water chemistry, and thus impact the lives of the fishes and plants that reside there- is not that big of a "stretch", right? I can't help but wonder what the possible impacts of different leaves, or possibly even seed pods from different geographic areas can have on the water and overall aquarium environment.

I mean, sure, pH and such are affected in certain circumstances - but what about the compounds and substances we don't- or simply can't- test for in the aquarium? What impacts do they have? Subtle things, like combinations of various amino acids, antioxidant compounds, obscure trace elements- even hormones, for that matter...Could utilizing different combinations of botanicals in aquariums potentially yield different results? You know- scenarios like,  "Add this if you want fishes to color up. Add a combination of THIS if you want the fishes to commence spawning behavior", etc.

It sounds a bit exotic, a bit gimmicky, even, but is it really all that far-fetched an idea?

Absolutely not, IMHO.

I think the main thing which keeps the idea from really developing more in the hobby- knowing exactly how much of what to add to our tanks, specifically to achieve "x" effect- is that we as hobbyists simply don't have the means to test for many of the compounds which may affect the aquarium habitat.

At this point, it's really as much of an "art" as it is a "science", and more superficial observation- at least in our aquariums- is probably almost ("almost...") as useful as laboratory testing is in the wild. Even simply observing the effects upon our fishes caused by environmental changes, etc. is useful to some extent.

At least at the present time, we're largely limited to making these sort of "superficial" observations about stuff like the color a specific botanical can impart into the water, etc. It's a good start. 

Of course, not everything we can gain from this is superficial...some botanical materials actually do have scientifically confirmed impacts on the aquarium environment.

In the case of catappa leaves, for example, we can at least infer that there are some substances (flavonoids, like kaempferol and quercetin, a number of tannins, like punicalin and punicalagin, as well as a suite of saponins and phytosterols) imparted into the water from the leaves- which do have scientifically documented affects on fish health and vitality. 

When we first started Tannin, I came up with the term "habitat enrichment" to describe the way various botanicals can impact the aquarium environment. I mused on the idea a lot. (I know that doesn't surprise many of you, lol...)

Now, I freely admit that this term may be interpreted as much more of a form of "marketing hyperbole" as it is a useful description. However, I believe that the idea sort of resonates, when we think of the aquarium as an analog for the wild aquatic habitats, and how the surrounding environment- the terroir- impacts the aquatic environment, right?

And we hear the interesting stories from fellow hobbyists about dramatic color changes, positive behavioral changes,  rehabilitated fishes, and those "spontaneous" spawning events, which seem to occur after a few weeks of utilizing various botanicals in aquariums which formerly did not employ them.

Sure, a good number of these interesting events and effects could likely be written off as mere "coincidences"- but when it happens over and over and over again in this context, I think it at least warrants some consideration! 

We're slowly beginning to figure this stuff out.

Yeah, we’re artists.

Mad scientists.

Fish geeks.

Dreamers.

Yeah, artists.

And this stuff is really as much of an “art” as it is a “science”, IMHO.

There is so much we don’t know yet. Or, more specifically, so much we don’t know in the context of keeping fishes. We need to tie a few loose ends together to get a really good read on this stuff…until we get to the "Dial-a-River” additive stage ("Just add a little of this and a bit of that, and...".)

But we're getting there...At least in terms of understanding some of the tangible benefits of botanical use, besides just the aesthetics.

And it all starts with understanding the impact of...the terroir, right?

I think so.

I think that really sums up how much amazing stuff there is to extrapolate from observing the nuances of Nature.

Stay resourceful. Stay observant. Stay curious. Stay resourceful. Stay open-minded...

And Stay Wet.

 

Scott Fellman

Tannin Aquatics 

 

 

 

June 16, 2020

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Don't even think about it...

I have some strong words and opinions about stuff I the aquarium world. And I am not afraid to share them with you on many days.

Today is one of those days. I needed to clarify, explain, and share some ideas.

Someone asked me the other day, rather innocently, I might add- how we "invented the idea of using botanicals in the aquarium." And, as I often do, after I cringed, I strongly and immediately corrected her, and explained that there is no single hobbyist or vendor who "invented" the idea. As long as people have been playing with aquariums, they've been throwing twigs and leaves and such into them- for various reasons and with various goals.

Nevertheless, it's not some "new practice" that Tannin Aquatics "invented."

I don't know why we as hobbyists need to assign a "creator" or "inventor" to everything. It's a bit weird. Now, if you want to give us "credit" for something, you can consider this:

The term "botanicals" didn't even exist as a contextual descriptor for this stuff in aquariums until about, oh, say 2015...when started Tannin and used the term to describe them. I appropriated this term, because the hobby needed a good descriptor of what this stuff was- especially if- as was my goal- we intended to make the practice of using them to create specific environmental effects in our tanks  more "mainstream" in the hobby. I don't claim many things in the aquarium hobby, but I will claim this one. 

Developing terminology and process are important parts of elevating hobby practices.Yeah, I suppose I'm acting rather boorishly about this because hobby "history" is important to me, and I want to set the history straight, because the "botanical-style" aquarium is still evolving, and we need to understand the difference between a more disciplined approach, and simply tossing some seed pods and such into a tank (as hobbyists HAVE been doing for many years.).

I'll say it again- WE DID NOT INVENT THE IDEA. No one did. 

"Well, if you didn't "invent" the stuff, what the hell DID you do?" (as if it really even matters, BTW)

What we did do was to source, test, research, and refine the practices involved in utilizing botanical materials safely and more predictably in aquariums. And taking this stuff to a more serious level required not only the aforementioned work- it required some descriptors and definitions.

And of course, while we're on the subject of definitions: Botanicals are simply natural plant materials (generally leaves, bark, wood, and seed pods) that are used for both decorative and environmental enrichment purposes in our aquariums. "Scott, you sell twigs and nuts!" as one of my reef-keeping friends profoundly declared! I suppose he wasn't too far off, although I think that was a bit over-generalized, lol. 

Now, the interesting thing is that, as hobbyists often do, we had to fight off the most "superficial" aspects of the description of our practice. We had to overcome the perception that utilizing botanicals was just some form of "aquascaping." I mean, sure, there is a large and significant aesthetic component to what we do. However, the most important aspect of utilizing botanicals in the aquarium is that they have the ability to influence the closed environment of the aquarium in a number of ways.

Many fishes (particularly South American fishes like Tetras, Cichlids and catfishes), as well as numerous African and Southeast Asian species (Gouramis, Bettas, etc.) benefit from the tannic acids and humic substances released by these materials into the water.

It has long been understood that there are actually some antifungal and possibly even antibacterial benefits to the properties inherent to "blackwater", resulting in healthier fishes and more viable spawns. And of course, botanical materials can help us recreate, to some extent, these conditions in the aquarium. And of course, it's not just environmental benefits that we see: Some animals, such as Plecos and even ornamental shrimp, derive supplemental nutrition from grazing on these materials.

And there are the expectations of what happens when we put these botanical materials into aquariums. We HAVE to consider these things. Not only because they impact our fishes' lives- but because they require us as hobbyists to make mental shifts to accept the function and appearance of these aquariums. This is perhaps different than almost any other aquarium approach out there at the moment. This is what we've spent a decade prior to starting Tannin, and the five years since we commenced business helping to flesh out, define, and explain.

Do you want a perfectly predictable sequence of occurrences and expectations for your botanical-style aquarium? Don't waste your time...Don't even think about it. Perfect predictability is just not a "thing" with these tanks. That being said, over the decades, we have noticed a specific group of phenomenon that occur with some regularity in botanical-style aquariums. Our experience positions us perfectly to help disseminate this information.

And THAT is the crux of why we spend SO much time and space discussing this stuff. We want expectations and experiences to be realistic and appropriate. That's our contribution to this game.

One of the things that we all experience with these types of systems is an initial burst of  tannins, which likely will provide a significant amount of visible color to the water. If you're not using activated carbon or some other filtration media, this tint will be more pronounced and likely last longer than if you're actively removing it with these materials!

You might also experience a bit of initial "cloudiness" in your water. This could either be physical dust or other materials released from the tissues botanicals, or even a burst of bacteria/microorganisms. Not really sure, but it usually passes quickly with minimal, if any intervention on your part. Oh, and interestingly enough-  not everyone experiences this...often this is a phenomenon which seems to happen in brand new tanks...so it might not even be directly attributable to the presence of the botanicals (well, at least not 100%). It might be other materials. It could be the sand, or dust/dirt from the other hardscape materials or the tank itself.

Of course, for those of you who will experiment with our NatureBase "Varzea" and "Igapo" substrates when they debut, you WILL experience cloudiness, turbidity, and tint as just part of the game. You'll either love it or hate it. But you will experience it! How much of a mental shift can you make to accept this as "normal" for your aquarium? That's the big question.

If you can't, our recommendation is that you don't even THINK about purchasing these substrates. Just don't. 

As with so many things in our practice of botanical-style aquarium keeping, we need to turn to Nature for a "prototype" of how these habitats are SUPPOSED to look and function.

This is aquarium keeping at its most raw, elemental, and yeah- natural. In a strange way, it's actually "cutting edge"- and that means that the "expectation set" is new, different, and unlike anything we've been indoctrinated to accept in the hobby before. It will challenge you. Test you. Perhaps it'll even piss you off- because it's not "Nature Aquarium" sterile artistic beauty. It's hard for many hobbyists to accept. And that's understandable and okay. 

If this shit bothers you...just don't even think about setting up one of these types of tanks.

Ouch.

So, that being said...what happens next in a typical botanical-style aquarium as it evolves?

Well, typically, as most of you who've played with this stuff know, the botanicals will begin to soften and break down over a period of several weeks. As we've discussed ad nauseum, you have the option to leave 'em in as they break down, or remove them (whatever your aesthetic sensibilities tell you to do!). Many "Tinters" have been leaving their botanicals in until completely decomposed, utilizing them as almost some sort of botanical "mulch", particularly in planted aquariums, and have reported excellent results.

Sure, the stuff will go through that biofilm phase before ultimately breaking down, and you'll have many opportunities to remove it...or in the case of most hobbyists these days- enjoy it for the food and biodiversity it brings to your system. And you will likely add new materials as the old ones break down...completely analogous to  "leaf drop" which occurs in the wild aquatic habitats we seek to replicate.

I have never had any negative side effects that we could attribute to leaving botanicals to completely break down in an otherwise healthy aquarium. Many, many users (present company included) see no detectable increases in nitrate or phosphate as a result of this process. Of course, this has prompted me to postulate that perhaps they form a sort of natural biological filtration media and actually foster some dentritifcation, etc. I have no scientific evidence to back up this theory, of course (like most of my theories, lol), but I think there might be a grain of truth here!

We're going to introduce some products later in the Summer/Fall which will address the biological "operating system" of botanical-style aquariums in ways not previously done. Suffice it to say, they'll require not only mental shifts on your part, but some observation, experimentation, education, and dedication. Not into that? Don't even think about trying them. Really. It's okay.

Oh, speaking of expectations- one of the "givens" of botanical aquarium keeping is that you will likely have to clean/replace prefilters, micron socks, and filter pads more frequently. Just like in Nature, as the botanicals (leaves, in particular) begin to break down, you'll see some of the material suspended in the water column from time to time, and the bits and pieces which get pulled into your filter will definitely slow down the flow over time. Stuff breaks down, and you can't stop it. Well, not unless you're standing by with a siphon hose by your tank 24/7/365.

The best solution, IMHO, is to simply change prefilters frequently and clean pumps/powerheads regularly as part of your weekly maintenance regimen.

 

Not into that? Well, you know what I'm going to say...

And of course...this is the elegant segue into the part about your "weekly maintenance regimen", right?

Well, here's my simple thoughts on this: Do "whatever floats your boat", as they say. If you're a bi-weekly-type of tank maintenance person, do that. If you're a once-a-month kind of person...Well, you might want to re-examine that! LOL. Botanical-style blackwater tanks, although remarkably stable and easy-going once up and running, really aren't true "set-and-forget" systems, IMHO.

You want to at least take a weekly or bi-weekly assessment on their performance and overall condition. Now, far be it from me to tell YOU- the experienced aquarist-how to run your tanks. However, I'm just sort of giving you a broad-based recommendation based upon my experiences, and those of many others over the years with these types of systems. You need to decide what works best for you and your animals, of course...

Now, remember, you're dealing with a tank filled with decomposing botanical materials. I mean, what do you THINK is going to be "normal" for a tank like this? Good overall husbandry is necessary to keep your tank stable and healthy- and that includes the dreaded (by many, that is) regular water exchanges. As we pointed out, at the very least, you'll likely be cleaning and/or replacing pre filter media as part of your routine, and that's typically a weekly-to bi-weekly thing.  

Just sort of goes with the territory here. Because, ya' know- leaves.

Oh, and during water exchanges, I typically will siphon out any debris which have lodged where I don't want 'em (like on the leaves of that nice Amazon Sword Plant right up front, or whatever). However, for the most part, I'm merely siphoning water from down low in the water column.

I'm a sort of "leave 'em alone as they decompose" kind of guy. And I'm not going to go into all the nuances of water preparation, etc. You have your ways and they work for you. If you want to hear my way some time, just DM me on Facebook or Instagram or whatever and we can discuss. It's not really rocket science or anything, but everyone has their own techniques.

And of course, regular water testing is important.

So, your testing regimen should include things like pH, TDS, alkalinity, and if you're so inclined, nitrate and phosphate. Logging this information over time will give us all some good data upon which to develop our expectations and best practices for water quality management.

Not just for the information you'll gain about your own aquarium and it's trends. It's important because we as proponents of the botanical-style aquarium movement need to log and share information about our systems, so we can develop a model for baseline performance of these systems, and continue to develop and refine  "standards" for techniques, practices, and expectations about these tanks. You're a pioneer of sorts, regardless of if you perceive yourself to be one or not!

Don't like that aspect? Well, don't even think about setting up one of these tanks.

 

Ouch. I'm hitting hard this morning!

I am, because you need to understand that playing with botanical-style aquariums is more than just a "style" of aquascaping. It's not just about then look. In fact, the function- the very nature of what we do and want to achieve with these tanks is what dictates the "look." It's about process.

"Setting the stage" for the process to take its course is only the beginning. Then comes the part about letting goa bit. Allowing Nature to evolve our work. We can look on in awe, and take delight in what is happening. 

To find little vignettes- little moments- of fleeting beauty that need not be permanent to enjoy.

And the changes...those earthy, perhaps inevitable changes which occur when terrestrial materials are submerged in water for an extended period of time? They're elegant- yet untamed...and not everyone's idea of "beautiful." Why? Largely because we don't control every aspect of the process; because we don't impose excessive amounts of order or influence to it.

We cede some of it to Nature...And that includes accepting the "look" as well.

It's hard.

Really hard for many.

Some people just "don't get it", and proffer that this is simply sloppy, not thought-out, and seemingly random. I recall vividly one critic on a Facebook forum, who, observing a recent botanical-inspired aquascape created by another hobbyist, commented that the 'scape looked like "...someone just threw in some pods and leaves in a random fashion.." 

Yeah, this guy actually described the aesthetic to a certain (although unsophisticated) degree...but he couldn't get past the look, and therefore concluded it was, "...haphazard, sloppy, and not thought out."

A shame.

I think if he glanced at a natural habitat and then looked at the tank again, he'd gain a new appreciation. Or at least, a sort of understanding.

But on the other hand, that was the charm and beauty of such a conceptual work. The seemingly random, transient nature of such an aquascape, with leaves deposited as in Nature by currents, tidal flows, etc., settling in unlikely areas within the hardscape.

Allowing Her some of that control.

Not everyone likes this nor appreciates it. And that's perfectly fine. It's not the "best" way to run a tank. Just "a way."

With so many people worldwide starting to play seriously with blackwater, botanical-style tanks, we're seeing more and more common trends, questions, ideas, issues, and ways to manage them...a necessary evolution, and one which we can all contribute to! 

Yet, if you're not into this...If you think setting up one of these tanks is just gonna be a cool "look" for your fish room, requiring little effort. If you're just trying to jump on someone sort of "trend"...Please- I beg you...Don't even think about it.

Help evolve the hobby.

Stay bold. Stay strong. Stay observant. Stay thoughtful. Stay diligent. Stay open-minded. Stay adventurous...

And Stay Wet.

 

Scott Fellman

Tannin Aquatics 

 

 

June 15, 2020

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"Any old log..."

Some of the most compelling things in natural aquatic habitats- and in the aquariums which we create to represent them- are large branches, fallen trees, and logs. The result of a tree, branch, or root system which finds its way into the water is a physical, environmental, and water-flow-dynamic-changing feature in the habitat.

I love fallen trees and branches.

I love what they can do. What they can bring to an aquatic environment.

I love how they inspire us.

I love the idea of doing an aquarium in which the primary feature is a big old piece of wood, covered in biofilm, algae, and other life forms.

Notice I didn't say "aquatic moss?" Why? Well, besides the fact that it's sort of an aquascaping contest cliche by now, I don't think it looks all that "authentic." Although I like the look of these features, personally, I have yet to see a moss-covered log in the Amazon region, or in an Asian blackwater swamp, and we need to accept- not fight- some of what really happens in Nature, and readjust our aesthetic sensibilities to understand what is really natural beauty.

It's not all neat and orderly and crisp green on brown.

It's just not. 

As we've mentioned numerous times here, Nature is not exactly a neat and tidy, perfectly-ratioed place. Rather it's often a world of chaos, randomness, detritus, biofilms, and fungal growth.

I think we have to sort of "desensitize" ourselves from the stigma of "biocover" on our wood. Now, I know, this idea undermines a century of aquarium-keeping/aquascaping dogma, which suggests that wood in the aquarium must be pristine, and without anything going on it (outside of the aforementioned mosses, in the last decade or so). 

And of course, that's really sort of antithetical to what happens in Nature!

When terrestrial materials fall into the water, opportunistic life forms, ranging from algae to fungi to bacteria- even sponges-will colonize the available space, eking out a living as they compete for resources. In addition to helping to break down some of these terrestrial materials, the life forms that inhabit submerged tree branches and such reproduce rapidly, providing forage for insects and aquatic crustaceans, which, in turn are preyed upon by fishes. Yeah, a food chain...started by a piece of tree that fell in the forested was covered by water during periods of inundation.

If you look at the way the "biocover" (such a generic term, wouldn't you say?) grows on these materials, it's obvious that it does so in a manner which helps it absorb light, dissolved oxygen, and nutrients from the water column. The largest, broadest surfaces are covered.

These mats of what many hobbyists would characterize as "unsightly growth" are some of Nature's most beautiful and elegant systems, optimized to exploit the dynamic environment in which they are situated. An enormous abundance of life is present, if we just take a few minutes to look for it. 

Now, as a hobbyist, I do get it.

We like things orderly. We like to see things looking "pristine" and well-kept...and I understand that well. For decades I was the guy who you wouldn't see a speck of algae in his tanks...Like, none. My reef tanks were so clean looking that one of my friends jokingly suggested that "you could give birth in there..."

But guess what? "sterile" is not natural.

At least, not in most aquatic habitats.

I see how planted tank people take great care to optimize the environment for the plants, eliminating any algae they can find, in favor of lush plant growth. And that makes sense in that context. However, when I see systems comprised of perfectly "ratio-obeying" rocks, covered in mosses, with neat "lawns" of low-cut, perfectly manicured grass on the substrate, the word "natural" doesn't immediately come to mind.

Rather, I find them stunningly beautiful, much in the same manner as a finely-kept garden or planter box. A piece of art. Respect the enormous effort and talent that went in to planning, executing, and maintaining the tank. I take exception with the moniker of "natural-looking" ascribed to many such tanks. Natural, perhaps in the sense that plants and aquatic life forms are growing there...but that's about it, IMHO.

Nature is simply not neat and orderly. Not in the "design" sense. Nature does not correspond to our need to index and arrange color, growth forms, leaf shapes in their proper place, according to some artificial ratios and rules.

Nope.

Nature is based on a sort of chaos. Or, being able to take advantage of chaos, anyways.

It's based on living things fighting to survive in a world which is not forgiving of life forms that cannot adapt to their environment. And as such, it has a compelling, almost relaxing beauty all of its own.

This viewpoint and willingness to embrace this more functionally-aesthetic interpretation  of Nature does not make me popular with some people, especially some in the aquascaping community, who feel that we are pushing the idea of "lax maintenance", "low concept" design, and "shoddy execution" (all actual words used by self-appointed "critics" to describe blackwater, botanical-style aquariums at one time or another over the years!).

I hate conflict, and have nothing but respect for most of these talented people, yet it seems we always receive some serious "rancor" from a few parties regarding our aesthetic. And frankly, I would rather spend more time on "The Tint" executing and creating content on some cool new ideas, but there is a valuable- and timely lesson to be learned here.

It's about acceptance, tolerance, and understanding.

I would imagine that the initial appearance of a botanical-style, blackwater aquarium makes it an easy target for those who are dogmatic, narrow minded and haven't got a clue on how these systems operate.

And let's be honest, I've never worked with a customer who created a botanical-style blackwater tank aquascape by just "tossing stuff in at random" (although that would be cool!).  There IS a LOT of thought an planning involved I the execution of these systems. Remember, we're not strictly about aesthetics. We're about fostering natural function, and the aesthetics are just a part of the whole equation.

The aesthetics often become far more enhanced after the aquarium has operated a period of time, resulting in a look that is often a bit different than we might have originally expected!

Botanical-style systems are different. They allow Nature to do a fair amount of the work, unobstructed by our regular intervention. This frightens some people. Yet, it's the ultimate expression of the concept of wabi-sabi, which Takashi Amano admired so much and urged us to embrace for so long. IMHO, it's the most critical- and most disregarded lesson he ever taught. Please Google it.

Yeah, these systems force us to look at Nature as it is...not simply as we want it to look.

These systems are so contrary to the hyper-dogmatic, homogenized, rule-driven lane that many of these "critics" operate in, that they simply cannot comprehend why people create such aquariums! If it weren't indicative of a problem, it would be funny.

Plenty of thought, skill, and effort goes into creating one of blackwater, botanical-style aquariums. You people are damn good!

There is a reason why the idea of creating these types of aquariums is literally exploding worldwide. They offer huge opportunities to express creativity, and to learn and contribute to an important body of knowledge within this speciality. They aren't that much different than what are touted as "high concept" aquariums by some, requiring plenty of planning, understanding, and talent to create and manage.

The opportunity to look at a feature one sees in a natural habitat and recreate the look and function of it is more enticing than ever before, given this mental shift. We just need to look at these natural features, consider how and why they formed, and what advantages they offer the aquatic life forms which resides in the. A more "wholistic" approach, indeed.

And then, we simply need to execute, unencumbered by artificial "rules" imposed by hobby dogma. A huge mental shift.

It's what comes after the tank is set up that really starts to differ from more "conventional" aquascaping and aquarium management.

The acceptance of natural processes, regardless of their appearance is key.  Making the effort to understand what is happening in our tanks, why it happens, and how these processes, if left "unedited", are exactly what happen in the wild aquatic habitats of the world.

A common "criticism" I hear from some people is that botanical tanks, with their brown water, biofilms, and decaying leaves, are a "cover" for "lack of technique" or "poor maintenance." To which I often respond, "Leave your 'scape alone for three weeks without touching anything on it, and I'll do the same with mine...lets see how much our tanks change."

Of course, there are never any takers among these critics, because they know that their tanks will "devolve" into what they would call "chaos" if they're not tending to it constantly. Some plants will overgrow others. Some will die back. The perfectly organized planting groups will fall by the wayside as the more dominant plants exploit the available resources. The botanical-style aquarium, which functions in a very natural manner, simply...continues to evolve. Leaves and pods decompose, fungal or biofilm growths wax and wane. Occasional strands of algae might pop up on a branch somewhere. Plants grow in the direction of light and nutrients. Just like in Nature, perhaps?

Fighting back nature does not make a tank "natural", IMHO.

Accepting it does.

And that requires talent, knowledge, and understanding on the part of the hobbyist.

And, just like accepting Nature, the hobby also needs to accept the fact that not everyone buys into everyone else's concept of what looks good, what's "cool", and what constitutes "natural" or whatever. Ironically, the highly talented people who unfairly criticize this style of aquarium are possibly ones who could contribute the most towards evolving them!  

Why some people love to bash the efforts and interests of others is beyond me. No one "owns" the idea of aquascaping. There is no "right or wrong" here; criticisms of things we haven't even tried before are not helpful.

They frighten off some individuals from even trying new things; questioning new ideas. How is that helpful?  To what end is this necessary? Now, in all fairness, it's a very small percentage of people who level such criticisms, but they are so vocal and venomous in their assertions that to not consider what they're saying and respond to them would be irresponsible on my part. We have received so much positive input, enthusiasm, and encouragement (not to mention, some awesome aquascapes!) from some of the world's most highly regarded aquascapers, that it's almost funny to hear such negativity...but, "people are people", right?

Guess the eternal optimist in me keeps thinking I can reach some of these people...not trying to convince them to create a blackwater/botanical aquarium; rather, to get them to simply understand that there is more than one methodology that can be used to create an amazing aquarium. To look to Nature not as just a "muse"- but as a teacher.

It's not that difficult a concept.

Enough divisiveness already! We're all aquarium hobbyists.

And we as hobbyists all need to really understand that the precious natural habitats that we ALL love so much offer a beauty, "order", and resilience all of their own, and that they evolved over time as the forces which act upon them except greater influence upon them.

Some of these forces are artificial and detrimental, like deforestations, siltation, runoff, and pollution. By making the effort to really understand how these habitats function in their un-adulterated state, we are gaining insights and appreciation that may help us do a better job at protecting them for future generations to enjoy.

Let's do a better job in the hobby of understanding each other. Let's do a better job of looking at Nature and appreciating the job it does, despite our predilection for wanting to  do things OUR way. Let's do a better job of being more open-minded, more creative within the context of what Nature does. Let's do a better job in the hobby of understanding each other. We're all better off together, working with each other to push the boundaries of this wonderful hobby.

And it all starts by looking at what happens to an aquatic habitat when any old log, branch, or root falls into it. To see, study, and understand that the aquatic environment is influenced by so many unique factors- many of which we can interpret and foster in our own aquariums, is the key. To give Nature the space to "breathe" within our tanks will take us to entirely new places in the hobby.

It's not only interesting...It's transformational! 

We just need to accept it. 

Stay creative. Stay honest. Stay open-minded. Stay studious. Stay together. Stay inspired...

And Stay Wet.

Scott Fellman

Tannin Aquatics

June 12, 2020

0 comments


After a rocky start, it's back to the bottom for us!

Well, if you've noticed lately, we're really starting to phase out rock on our website! It's pretty obvious...We've been blowing the stuff out at ahem, "rock bottom" prices lately to get rid of it! Surely you noticed, because we've never sold so much rock so quickly! Weren't aware? Well, you'd have to be "sleeping under a rock" to- okay, that's enough already!

Seriously, though, I'm finished with rock...at least, finished with selling the stuff on our site. (although we'll keep our "River Stones" and River Pebbles", 'cause I like them and they make sense!). Is this a sudden backlash against rock or something? Not really. I just don't like handling, sourcing, shipping, and selecting the stuff. It's a pain in the ass: expensive to ship, highly subjective to select, and difficult to get a good mix of sizes from our suppliers...so I'm done.

It also reminds me of things I hated about the coral trade...too many stupid names to keep up on, a lot of hype about any rock that some superstar 'scape uses, and a sort of lack of "romance" to me.

Oh, and the best reason?

It really isn't all that applicable to what we do.

As we delve deeper into the world of blackwater, botanical-style aquariums, I think it becomes more and more important for us to understand the wild blackwater habitats of the world. Specifically, how they form, and what their physical characteristics are. It's easy for us to just go the  "cliche' route" and say that blackwater is water, "...which has a low pH caused by dissolved organic materials and looks the color of tea."  You could just leave it at that. You know, the standard line used for decades.

Not untrue, but not really all that helpful in understanding exactly what it is, IMHO.

And more important, not helpful in understanding why it has these characteristics.

And there are some things which contribute to the overall habitat of blackwater environments- specifically, how they form.

Well,interstingly, it does sort of start with the study of rocks...Geology.

Hey, don't start yawning on me...

I should first start of by freely admitting that I sort of- well, dozed through the limited number of geology classes I took in high school and college, and never knew that the time I spent in those classes drawing pictures on the back of my notebooks and trying to figure out where to get the stuff I needed for that weekend's party would ever come back to haunt me decades later, when I'd have to re-familiarize myself with all of this stuff!

So, my understanding is limited, but I'll convey what I DO know to you here...And how it relates to our area of interest.

Blackwaters in areas like Amazonia (one of our fave locales, of course!) drain from an area known to geologists as the "Precambrian Guiana Shield", which is comprised of sediments include quartz, sandstone, shales, and conglomerates, stemming from the formation of the earth some 4.6 billion years ago. As a result of lots of geological activity over the eons, a soil type, consisting of whitish sands called podzol is formed.

Podzols typically derive from quartz-rich sands, sandstone, and other sedimentary materials in areas of high precipitation. (Hmm, like The Amazon!). Typically, Podzols are kind of shitty  for growing stuff, because they are sandy, have little moisture, and even less nutrients!  

A process called podzolization (of course, right? What the fuck else would you call it?) occurs where decomposition of organic matter is inhibited. Numerous microbes and plants consume some of the nitrogen, and while eaten by other organisms, convey what's left to the even lower-lying forest habitats.

The Amazonian blackwater rivers are largely depleted in nutrients, having passed through the lowland forest soils as groundwater, from which weathering has already occurred. As a result, layers of acidic organics build up. With these rather acidic conditions, a deficiency of nutrients further slows down the decomposition of organics. So, yeah- lousy soil for growing stuff...But guess, what? They form the basis of the substrate in many Amazonian aquatic habitats! 

And the water which flows over this soil is what we call "blackwater",  which achieves it's unique color from a really high content of dissolved  humic substances- poor in nutrients and electrolytes. It's characterized by having sodium as one of its major cations (ions with fewer electrons than protons, giving them a positive charge), which means it has low alkalinity. Typically, the pH and electrical conductivity values are less than 5.0 and 25 μS cm–1, respectively (pretty freakin' low!).

So, to make a very long and intimidating story short, the physical characteristics of blackwater habitats are influenced as much by the geology as anything else!  

That is to say, all of the dissolved humic substances which give these bodies of water their unique look are "enabled" by the geological properties of the region. And from the "trace element perspective" (the reefer in me), only Fe, B, Sr, Pb and Se present consistent concentration variabilities sufficient to influence the chemistry of these waters...Like, this water has very low concentrations of trace elements.

That's why you'll often see simple fine, white silica-type sands on the bottoms of so many Amazonian streams and rivers. They originate up in the Andes mountains and are transported by various means into the lowland areas. I mean, there is way more to this process than I can convey here- but it's a study in the relationship between seemingly unrelated elements and how they come together.

Now, I admit that this is probably more than you will ever care to know about how sand works in your fave blackwater habitats, but I think it's important to understand that it's all kind of related. In fact, it makes it a lot easier to understand how blackwater systems came to exist and function when you consider this "big picture" stuff!

And of course, we're a hell of a lot more interested in the "decaying vegetation" (you know, the leaves, twigs, seed pods...stuff like that!) which influences the waters.

So, using a quality substrate material which doesn't impact the pH or buffering capacity of the water to any great extent is important...The reality is that just having an awareness of what goes on in the natural aquatic habitats we love gives us a nice "leg up" on this stuff. You're obviously not going to use a strongly buffering substrate like aragonite or whatever to do the job in your low pH and alkalinity blackwater aquarium, right?

And then there is that question about utilizing rocks in your "igapo" aquascape...

Like, why don't you find rocks in these habitats? 

As you know from my long-winded description above, I'm no expert-or even a novice- on geology or geochemistry, or anything in that subject area, for that matter....However, based on my research into this stuff, as related above, it goes without saying that these are hardly conditions under which rocks as we know them could form.

Oh, sure, you might find the random rock in the igapo that was washed down from the Andes or some other high-country locale in these forests, but it's a pretty safe bet that it did not evolve there. This also helps to explain why the blackwater habitats are generally low in inorganic nutrients and minerals, right? 

So...if you're really, really hardcore into replicating an igapo, you'd probably want to exclude rocks- especially if you're entering one of those biotope aquarium contests, astute judges would (rightfully) nail you on scoring for falling back on your natural inclinations as an aquascaper and tossing some in. 

I personally, of course, would be a bit more forgiving, but you won't find rocks in my igapo tanks!

Besides, there is something far more compelling and romantic about leaves, seed pods, and wood than there is about a bunch of rock, right?

Maybe?

Okay, don't answer that...

Yeah- you WON'T find any rocks in my "igapo" tanks...

Nope.

I just can't say that I]m really into them.

Rather, we choose to concentrate on the more "ephemeral" components of the habitat, and rightfully so!

Our ability to mimic this aspect of the flooded forest habitats is a real source of benefits for the fishes that we keep- and a key to unlocking the secrets to long-term maintenance and husbandry of botanically-influenced aquariums.

The transformation of dry forest floors into aquatic habitats provides a tremendous amount if inspiration AND biological diversity and activity for both the natural environment and our aquariums.

Flood pulses in these habitats easily enable large-scale "transfers" of nutrients and food items between the terrestrial and aquatic environment. This is of huge importance to the ecosystem. As we've touched on before, aquatic food webs in the Amazon area (and in other tropical ecosystems) are very strongly influenced by the input of terrestrial materials, and this is really an important point for those of us interested in creating more natural aquatic displays and microcosms for the fishes we wish to keep.

Creating an aquascape utilizing a matrix of leaves, roots, and other materials, is one of my favorite aesthetic interpretations of this habitat...and it happens to be supremely functional as an aquarium, as well! I think it's a "prototype" for many of us to follow, merging looks and function together adeptly and beautifully.

Way sexier snd more interesting to me than any "Iwagumi" layout everyone drools about...Far more compelling than some "new" rock with a stupid name that people get all emotional about.

I like roots, twigs, seed pods, leaves, wood, and soils

Now, I think at least part of the reason why we're seeing success with utilizing botanicals in our aquariums is that fishes are instinctively "programmed" to utilize many of these materials as both feeding substrates- and as food items in and of themselves. (Yeah, "pellets and flakes" are NOT part of their natural diet... 😆)

 

Oh, but what about rocks in blackwater tanks? "Stay on topic, Fellman!"

Well, yeah, you CAN play with rocks in a blackwater aquarium. Nature has a prototype for THAT... You just need to study a bit.

In fact, you can have, rocks, leaves, wood and blackwater all together. It's just about context. It's about understanding how and why these materials come together, what factors conspire to cause this, and what can happen when it does.

Yeah, you can do it. You just won't be able to get many rocks from us! What are we going to replace our rock selection with? Something near and dear to my heart:

Substrate materials.

We've been busy formulating and testing some unusual substrates and creating variations that have not previously been offered in the trade before. Stuff that is perfectly suited for what us botanical-style, blackwater and brackish aquarium geeks do. Stuff that is designed to replicate, in form and function, the materials found in the natural habitats of our fishes.

So, for a lot of reasons, I think rocks are probably the least applicable materials we can offer...of course, the facts can go either way.

That being said...

A little research into these seemingly obscure, and perhaps unrelated topics can sometimes give us some awesome clues that can influence our aquarium practice in ways we haven't even imagined. Clues which may lead to further evolutions and improvements to our practices. Clues that can help us continue to create compelling aquatic displays.

So, when you see me unloading rocks at stupid low prices, you'll at least have a little bit of context, right?

I hope so!

Stay engaged. Stay intrigued. Stay curious. Stay diligent. Stay informed. Stay inspired...

And Stay Wet.

 

Scott Fellman

Tannin Aquatics 

June 11, 2020

0 comments


We told ya...really! Or, did we? I think so...

One of the great things about running Tannin is that not only do I get to curate and create a pretty cool selection of botanical materials- I have had the great pleasure of helping create and refine the technique and processes that we apply to use them in our aquariums. I didn't invent the idea. However, I think that I helped advance and perfect the idea.

I find it both an honor and a responsibility to do this.

And I take the responsibility very seriously...Myself and my team have spent years (decades, in my case) personally experimenting with a huge amount of botanical materials to create all sorts of aquarium systems with them. And during that time, we've developed techniques, guidelines, and "best practices" for using botanicals in aquariums. We've made some errors, and lost some fishes along the way, unfortunately. Hopefully, our experiences and lessons learned save others from these bad outcomes.

And, most important of all, we've made a huge effort to share all of this experience-the good, bad, and ugly-with you- our community, and the hobby as a whole- on this website, in this blog, our podcast, social media posts, several print publications, clubs, and on other podcasts. As loyal readers of this blog and listeners to this podcast know by now, I like to share stuff that happens around Tannin- the good and the bad- things we do well, and shit we screw up-because it may well give you insight into "what makes us tick", so to speak.

So, imagine my surprise when, the other day, I received an email from a customer who was quite upset about his botanicals developing what he called a "white algae" on their surfaces, and that they were apparently "rotting..." He went on to lament that he may have "wasted money" on his purchase, and that he was "...an unsatisfied customer..."

Woah- "unsatisfied customer"- that's like the worst thing I could hear as a business person! A nightmare scenario in my world, where your happiness is everything! What could have happened to precipitate this feeling? I immediately began to investigate to see what I could have done wrong, and what I could do to correct the situation. I reviewed the customer's order, the botanicals that were used in his pack, and the shipping time, etc.- all of the things that you'd do as a business person. Nothing amiss there.

Yet still, the customer was unsatisfied. While I initially thought it was nothing we did "wrong", the reality was that the customer felt he was somehow "wronged." And believe me- everything that goes wrong with your order, I assume is 100% MY fault.

All of it.

Regardless...something seemed amiss. It was obvious from the customers observations and the terminology he used in his email that something didn't go as expected. Could I have done something- anything- to have helped him avoid being disappointed?

Well, yes- and no...

Now, on the surface, I empathize with anyone who is experiencing something that they may not have seen before, or something which is outside of their understanding. Yet, when it comes to stuff like our botanicals, in this instance, it made me wonder? Why was this customer surprised? What expectations did he have of the botanicals before he placed an order? How did he NOT know that they are subject to recruiting biofilms on their surfaces, softening and ultimately decomposing, and  imparting a tint to the water? All of the things we consider fundamental and talk about obsessively in our world.

I mean, it's not like we don't discuss all of this stuff out there for all to see and learn about.

So, yeah, my very first instinct was almost defensive...

Fortunately, experience in this business and a little bit of instinct tells me never to just jump on someone when they complain. It's not just bad business- it's a stupid thing to do. I remember many times in the coral business, perusing online vendor forums on sites like Reef2Reef, and seeing how poorly some of our competitors handled customer complaints. Some were downright awful, publicly attacking the customer, etc., and I must admit, I sort of enjoyed the spectacle that usually arose when customers complained to certain vendors! It was often a real "train wreck."

Of course, when it happens to you, it's not all that funny. However, it IS a chance to make things right, perhaps win over a skeptic, and learn. IF you handle it right, and IF the customer can be "reached."

In this case, though, something told me that I was dealing with a customer who may have made one of the hobby's biggest and most common errors: "Leaping before looking." This was clearly someone who didn't have a clue what to expect. Just his terminology that he employed to describe what he was observing told me that. Where did the fault lie? Well, regardless, I can shoulder at least some of the blame. He somehow didn't see all of the information we put out.

What could I do about that?

Well, what I did in this instance was to explain to him that these occurrences are perfectly normal and part of what we expect in this game. I sent  links to a bunch of blog posts on the relevant topics of concern. My first thought is that, even though I may feel the messages and information are out there- they may simply be difficult for some people to find. They might be lost in the constant drumbeat of customers' pics of their cool tanks, etc. Maybe we need to do a better job on making the information even more available.

In fact, it's obvious that we do. We have to keep improving. Make it even more visible. Communicate more about how botanical-style aquariums work. For someone to have found our site, got excited enough to buy the products we offer, and then to NOT understand that what he was observing is perfectly normal is a definite issue for us to correct.

On the other hand, after thinking it over for a while, the disappointment of this customer was rooted in what I feel is an increasingly common problem in the hobby: Getting caught up in the hype and superficial aspects of something, and then just jumping in without doing some homework.

In our world, that means people seeing the cool look and unique benefits of botanical-style aquariums, without making the effort to study the functions, occurrences, and processes which we need to expect and embrace when creating these aquariums.

A lot of hobbyists (and I KNOW this, because I talk to a lot of them...) simply don't feel the need to learn all of the good, bad, and ugly of this stuff before jumping in. I mean, these aquariums LOOK so cool, and there are so many out there- they can't be that hard, right? Botanicals must stay pristine and clean and perfect forever, like an aquarium ornament or something...Because it's all about the LOOK, right? I mean, "..the guy's tank on Instagram looked so cool..."

That's the disconnect, IMHO. It's a real "pet peeve" of mine, too- as you probably know.

Botanical-style aquariums are not a "style of aquascaping."

They are a methodology- an approach- to keeping aquairums, and with the approach come unique functions AND aesthetics. The aesthetics being a small (but important and alluring) part of the whole thing, really.

And I think that it's a failing of me, the vendor and so-called "hobby authority"- because I need to find even better ways to get more of the information into the ultimate consumer's hands. Not just pretty pics and videos. My blogs, podcasts, and articles need to be MORE available. I'll work on it.

In general, it's also a failing of many vendors in the aquarium industry for trying to do all that they can to get people to simply purchase stuff without offering education in equal quantities. I say "many", because there are a lot of vendors that do a fantastic job of educating, too. Yet, there is ALWAYS room for improvement.

Everywhere.

And finally- and perhaps most important- it's every bit as much about the individual hobbyist, who often jumps into something without making more than the most cursory, most superficial effort to learn more about what they are interested in doing in the hobby before jumping in. A lack of personal responsibility to educate oneself. This isn't a new phenomenon- it's been around for decades. I remember reading Tropical Fish Hobbyist when I was a kid, and a reader would write in about a tiny fish they purchased on impulse at the LFS, without knowing what it was, only to be just schooled by the magazine's editors because they bought a baby Gar, or something insane like that. 

I understand that, sometimes, it's okay to "learn on the fly"- that's fun for a lot of people...I know quite a few hobbyists like that. The kind who throw away the instructions for the new gadget they just purchased and jump right in and start "flipping switches and pressing buttons." And that's okay...I suppose. However, if you're going to leap before you look, shouldn't you at least consider what is supposed to be occurring?

I think so. 

So, yeah, I DO call BS on some of this.

I encourage every hobbyist to at least make SOME effort to understand what they're getting into before they go full speed ahead. In this age of Google and Facebook and tons of forums- there is simply no excuse for doing something in the hobby and being unpleasantly surprised when things go exactly as they're supposed to, because you didn't bother to do your homework. If you did, you'd know that what you're experiencing is, in our case- THE thing.

Yeah, I suppose I'm doing sort of the same thing that I used to laugh at in my coral days...sort of. Because the difference is that, although I put out what I felt is a ton of accessible information- I obviously didn't make enough of it -or make it more easily accessible-to reach this person on this occasion.

It's something I can work on. And I will.

And to my fellow hobbyists? Well he/she should get off his ass and read. That's my metaphorical "spanking." I mean, just because you might have to do a little search here to learn about something in the hobby that you're about to embark on, it doesn't mean that you're somehow a "victim" of marketing or something. There is no excuse for ignorance in today's world.

You need to educate yourself. You need to go beyond simply looking at pictures. You need to put in the work. And you need to know that- even if you study and go carefully- stuff can still go wrong.

We're dealing with Nature, and SHE controls the game. She dictates the process. She creates the aesthetics, and she determines the outcomes. Anyone who has kept aquariums for any length of time knows that you can do everything "by the book" and still fail. It's part of the wonder of Nature and the awesomeness of the Universe.

So what we can do- what we ALL can do- hobbyists, vendors, and lovers of aquariums- is to observe, learn, and SHARE our experiences. For the benefit of everyone.

Because nothing sucks more in the hobby than finding out after the fact that, if you knew all of the details, you may NOT have taken the leap quite so quickly. 

And to my disgruntled customer? Well, I haven't heard back yet. I hope that he reads the links I sent. I hope he goes deeper. I hope that he makes the effort to understand  what is supposed to happen in a botanical-style aquarium. I hope that he decides that this botanical-style aquarium thing, with all of it's unique function and unusual aesthetics- and benefits- is for him. I really hope that. Even if he gets his botanicals from someone else. It's bigger than just one company, one author, or one opinion on stuff.

It's an awesome hobby. A lifetime hobby. Please treat it as such, rather than a quick, easy thing to do on a weekend.

Educate yourself. Make use of the abundant resources out there. Even if you have to dig just a bit. Make Google your friend.Talk to fellow hobbyists. Reach out if you're not sure. Don't assume stuff. Don't let ignorance be your companion on the journey. Don't just rely on what you skimmed over or "heard..." Put in the work. You should want to- because just about anything that is cool and desirable requires some effort.

And yeah- we told ya' so.

Stay educated. Stay observant. Stay smart. Stay open-minded. Stay skeptical. Stay    engaged...

And Stay Wet.

 

Scott Fellman

Tannin Aquatics

 

June 08, 2020

0 comments


Clarification.

I think I need to clarify something...😆

Let's talk about cloudy water for a second. 

Actually, we've talked about it a lot here, but I think it's something that's going to always come up in our little hobby speciality.

Well, specifically, what causes it?

A lot of things, of course.

Now, many of the causes are biological in nature. In the case of our botanical-style aquariums, the cloudiness could also be caused, at least in part- by the dissolving of the botanicals themselves. When you think about it, most plant parts, such as seed pods and such, are comprised of materials such as lignin, cellulose, etc., and their constituent sugars, starches, etc. And, because of this composition, will release these materials into the water column.

Now, cloudiness, in general, may be a "tip off" to some other issues in the aquarium. And, as we all know, cloudiness can usually be caused by a few factors:

1) Improperly cleaned substrate or decorative materials, such as driftwood, etc. (creating a "haze" of micro-sized dust particles, which float in the water column).

2) Bacterial blooms (typically caused by a heavy bioload in a system not capable of handling it. Ie; a new tank with a filter that is not fully established and a full compliment of livestock).

3) Algae blooms which can both cloud AND color the water (usually caused by excessive nutrients and too much light for a given system).

4) Poor husbandry, which results in heavy decomposition, and more bacterial blooms and biological waste affecting water clarity. This is, of course, a rather urgent matter to be attended to, as there are possible serious consequences to the life in your system.

And, curiously enough, the "remedy" for cloudy water in virtually every situation is similar: Water changes, use of chemical filtration media (activated carbon, etc.), reduced light (in the case of algal blooms), improved husbandry techniques (i.e.; better feeding practices and more frequent maintenance), and, perhaps most important- the passage of time.

Of course, with the "cloudiness" caused by our "technique" or application of botanicals is a slightly different story. These are sort of "natural consequences" of what we do..

Now, you could intervene in this if you wanted to...Performing larger water exchanges, employing chemical/very fine mechanical filtration media, etc. Personally, I have learned over the years NOT to let this stuff phase me. I suppose I'm so deep in my own "mindset" about letting nature do its thing, that I don't do much to combat it...

A lot of botanical-style aquairums start out with a little cloudiness. It's often caused by the aforementioned lignin, as well as by a Burts of microbial life which feeds upon these and other constituents of botanicals.

Once this initial "microbial haze phase" passes, there are other aspects to the water clarity which will continue to emerge. And I think that these aspects are similar to what we observe in Nature.

For example, I've noticed that in many of my aquariums, particularly those with certain types of wood (like mangrove, newer Mopani, etc.), you'll get more of a sort of "patina" to the water. Again, I'm squarely in the realm of speculation here, but I can't help but wonder if certain wood and botanical materials/leaves have a greater content of organic materials (or more readily release these materials into the water because of their structure), lignin, tannins, etc., thus creating this phenomenon?

Those of us in the community of blackwater, botanical-style aquarists seek out tint and "body" in our water...while the rest of the aquatic world- well, they just sort of... freak the fuck out about that, huh?

One of my friends calls this "flavor", and his moniker makes sense, when you think about it!

And I think that this is a really interesting phenomenon, which is distinctive to our botanical-stye blackwater/brackish aquariums. To accept it is a choice, and it definitely requires the adoption of a mindset shift to appreciate that this is very similar to what we see in many of the natural aquatic systems that we attempt to replicate.

When we begin releasing some of our "NatureBase" substrates in the coming months, you'll understand first hand why water clarity isn't as important a factor in creating a "healthy" aquarium as the water quality is.

In Nature, the accumulations of decomposing plant materials, leaves, and sediments all contribute to this cloudiness or turbidity of the water. In our aquariums, it's pretty much the same!

Yes, we are always of the opinion that an aquarium is NOT an open, natural system, and that there are fundamental differences between the two.

However, to see some of the processes, aesthetics, and what we call "functional analogies" (i.e.; the way materials break down, re-distribute within the tank, and how the aesthetics and water chemistry are affected by water exchanges, etc.) take place in our aquariums, we can't help but think that we're "on to something" here.

(Image by Aquariumaniak Khizanishvili- a master of the "dirty" aquarium!)

Nature is simply not a squeaky-clean place. It just isn't.

So, yeah, our aquariums may NOT have the "crystal-clear", colorless water which many hobbyists envision when they think of what an aquarium "should" look like. Yet, with the continued, evolving work which our community is doing, we'll continue to discuss/analyze/debate the merits of such clarity profiles in our systems.

In Nature, we see these types of water characteristics in a variety of habitats. While they may not conform to everyone's idea of "beauty", there really IS an elegance, a compelling vibe, and a function to this. 

Fish don't care that their water is tinted, a bit turbid, and sometimes downright cloudy.

As we've discussed a lot lately, we're absolutely obsessed with the natural processes and aesthetics of decomposing materials and sediments in our aquariums. And of course, this comes with the requirement of us to accept some unique aesthetic characteristics, of course!

It's almost like our idealized aesthetic perceptions of what we feel water should look like in an aquarium have conditioned us as a hobby to sort of gently disregard what it truly looks like in the habitats from which our fishes evolved. Now, I'm certainly not asserting that keeping fishes in a crystal-clear aquarium is somehow going to ruin their vitality or render them susceptible to many illnesses, or that providing "blackwater" conditions is some sort of miracle concept that will lead to unimagined success.

However, I'm at least curious about how much better our animals might do long-term (I'm talking decades in captivity of being bred, etc.) if maintained in conditions that more-or-less replicate the waters from which they evolved. We've seen a lot of Betta and Apistogramma breeders utilize these types of conditions in their aquariums for many years, and their successes have been obvious.

We have taken our first tentative footsteps beyond what has long been accepted and understood in the hobby, and are starting to ask new question, make new observations, and yeah- even a few discoveries- which will evolve the aquarium hobby in the future.

Stay curious. Stay observant. Stay engaged. Stay bold. Stay engaged...

And Stay Wet.

 

Scott Fellman

Tannin Aquatics 

 

 

June 05, 2020

0 comments


Small creatures. A bigger perspective, and a huge impact!

One of the aspects of botanical-style aquariums that we discuss from time to time, but can't bring up enough, is the importance of the "microbiome" of the aquarium environment.

A "microbiome", by definition, is defined as "...a community of microorganisms (such as bacteria, fungi, and viruses) that inhabit a particular environment." (according to Merriam-Webster)

You may not see them- at least, not all of them. However, they are present in almost every aquarium...Especailly our natural, botanical-style aquariums.

Now, sure, every aquarium has a microbiome to a certain extent:

We have the beneficial bacteria which facilitate the nitrogen cycle, and play an indespensible role in the function of our little worlds. The botanical-style aquarium is no different; in fact, this is where I start wondering...It's the place where my basic high school and college elective-course biology falls away, and you get into more complex aspects of aquatic ecology in aquariums.

Yet, it's important to at least understand this concept as it can relate to aquariums. It's worth doing a bit of research and pondering. It'll educate you, challenge you, and make you a better overall aquarist. In this little blog, we can't possibly cover every aspect of this- but we can touch on a few points that are really fascinating and impactful.

Many of us are even moving beyond just the pretty look of the botanical-style aquarium, and moving into a deeper stage of understanding how our aquariums function as miniature ecosystems.

Now, one thing that's unique about the botanical-style approach is that we tend to accept the idea of decomposing materials accumulating in our systems. We understand that they act, to a certain extent, as "fuel" for the micro and macrofauna which reside in the aquarium, and that they perform this function as long as they are present I the system.

I have long been one the belief that if you decide to let the botanicals remain in your aquarium to break down and decompose completely, that you shouldn't change course by suddenly removing the material all at once. 

The point is, our aquariums, much like the wild habitats we strive to replicate, are constantly evolving, accumulating new materials, and creating new physical habitats for fishes to forage among. New food sources and chemical/energy inputs are important to the biological diversity and continuity of the flooded forests and streams of the tropics, and they play a similar role in our aquariums.

We add leaves and botanicals periodically, not just for an aesthetic "refresh", but for a "re-charge" of the biome within our tanks. This is a fascinating spect of the botanical style aquarium. It facilitates the cycle of growth, nutrient accumulation, and decomposition. It becomes not only part of our practice, but it's part of the "system" we are trying to facilitate.

I'm fascinated by the "mental adjustments" that we need to make to accept the aesthetic and the processes of natural decay, fungal growth, the appearance of biofilms, and how these affect what's occurring in the aquarium. It's all a complex synergy of life and aesthetic.

And we have to accept nature's input here.

Nature dictates the speed by which this decomposition process occurs. We set the stage for it- but  Nature is in full control.

And that's perfectly okay! 

Nature can control. Nature can stabilize. Nature can admonish us...However, Nature can also provide.

We've talked a lot about allochthonous input- food which comes from outside the aquatic environment- such as insects, fruit, seeds, etc. You know, stuff which literally falls from the trees! However, there is also a significant amount of food which our fishes can obtain which occurs within the aquatic habitat itself. 

This is something that we, as lovers of the botanical-style aquarium, are well-suited to embrace. And of course, I"m utterly fascinated by the concept of food production within our botanical-style aquariums! Yes, food production. If you really observe your tank closely- and I'm sure that you do- you'll see your fishes foraging on the botanicals...picking off something.

I've noticed, during times when I've traveled extensively and haven't been around to feed my fishes, that they're not even slightly slimmer upon my return, despite not being fed for days sometimes... 

What are they eating in my absence?

Well, there are a number of interesting possibilities.

Perhaps most interesting to us blackwater/botanical-style aquarium people are epiphytes. These are organisms which grow on the surface of wood, botanicals, plants or other substrates, and derive their nutrients from the surrounding environment. They are important in the nutrient cycling and uptake in both nature and the aquarium, adding to the biodiversity, and serving as an important food source for many species of fishes.

In the case of our fave aquatic habitats, like streams, ponds, and inundated forests, epiphytes are abundant, and many fishes will spend large amounts of time foraging the "biocover" on tree trunks, branches, leaves, and other botanical materials.

The biocover consists of stuff like algae, biofilms, and fungi. Although most animals use leaves and tree branches for shelter and not directly as a food item, grazing on this epiphytic growth is which occurs on them is very important.

I am of the opinion that a botanical-style aquarium, complete with its decomposing leaves and seed pods, can serve as a sort of "buffet" for many fishes- even those who's primary food sources are known to be things like insects and worms and such. Detritus and the organisms within it can provide an excellent supplemental food source for our fishes!

It's well known that in many habitats, like inundated forests, etc., fishes will adjust their feeding strategies to utilize the available food sources at different times of the year, such as the "dry season", etc. And it's also known that many fish fry feed actively on bacteria and fungi in these habitats...so I suggest one again that a blackwater/botanical-style aquarium could be an excellent sort of "nursery" for many fish and shrimp species! 

And of course, it goes beyond even that...

Because of the very "operating system" of our tanks, which features decomposing leaves, botanicals, soils, roots, etc., we are able to create a remarkably rich and complex population of creatures within them.

This is one of the most interesting aspects of a botanical-style aquarium: We have the opportunity to create an aquatic microcosm which provides not only unique aesthetics- it provides soem supplemental nutritional value for our fishes, and perhaps most important- nutrient processing- a self-generating population of creatures that compliment, indeed, create the biodiversity in our systems on a more-or-less continuous basis.

True "functional aesthetics", indeed!

Another important part of our aquarium microcosms are fungi.

Yeah, you heard me. Fungi.

Fungi reproduce by releasing tiny spores that then germinate on new and hospitable surfaces (ie, pretty much anywhere they damn well please!). These aquatic fungi are involved in the decay of wood and leafy material. And of course, when you submerge terrestrial materials in water, growths of fungi tend to arise.

Anyone who's ever "cured" a piece of aquatic wood of almost any type for your aquarium can attest to this!

Fungi tend to colonize wood because it offers them a lot of surface area to thrive and live out their life cycle. And cellulose, hemicellulose, and lignin- the major components of wood and botanical materials- are degraded by fungi which posses enzymes that can digest these materials! Fungi are regarded by biologists to be the dominant organisms associated with decaying leaves in streams, so this gives you some idea as to why we see them in our aquariums, right?

And of course, fishes and invertebrates which live amongst and feed directly upon the fungi and decomposing leaves and botanicals contribute to the breakdown of these materials as well! Aquatic fungi can break down the leaf matrix and make the energy available to feeding animals in these habitats.

And look at this little gem I found in my research:

"There is evidence that detritivores selectively feed on conditioned leaves, i.e. those previously colonized by fungi (Suberkropp, 1992; Graca, 1993). Fungi can alter the food quality and palatability of leaf detritus, aecting shredder growth rates. Animals that feed on a diet rich in fungi have higher growth rates and fecundity than those fed on poorly colonized leaves. Some shredders prefer to feed on leaves that are colonized by fungi, whereas others consume fungal mycelium selectively..."

"Conditioned" leaves, in this context, are those which have been previously colonized by fungi! They make the energy within the leaves and botanicals more available to higher organisms like fishes and invertebrates! 

It's easy to get scared by this stuff...and surprisingly, it's even easier to exploit it as a food source for your animals! This is a HUGE point that we can't emphasize enough.

And of course, the same goes for our buddies, the biofilms.

Biofilms are interesting, in and of themselves. Understanding the reasons they arise and how they propagate can really help us to appreciate them!

We've discussed this before; however, let's revisit the process one more time:

It starts with a few bacteria, taking advantage of the abundant and comfy surface area that leaves, seed pods, and even driftwood offer. The "early adapters" put out the "welcome mat" for other bacteria by providing more diverse adhesion sites, such as a matrix of sugars that holds the biofilm together. Since some bacteria species are incapable of attaching to a surface on their own, they often anchor themselves to the matrix or directly to their friends who arrived at the party first.

 

These bacteria and fungi are all participants in a rather grand process of nutrient utilization- both in Nature, and in our aquariums. And it all starts with adding botanicals and leaves to our systems. This is absolutely analogous to what happens in Nature.

And that is EXACTLY what we want. Not to give Nature "lip service" as many aquarium hobby movements do. No, we want to embrace Nature in all her glory and diversity. We want to replace our expectations of what we think Nature should look and function like, and simply study, understand, appreciate and support her processes in our aquariums

We need to really step back sometimes and separate ourselves from the sexy (well, to some of us) look of botanical-style aquariums, and really try to grasp the biological diversity that occurs in our tanks! We need to celebrate it- regardless of appearance- and understand how amazing this really is! 

The front row seat that we as botanical-style aquarium lovers have is quite unique in the aquarium hobby. In my opinion, no other hobby speciality is poised to study, appreciate, and embrace the vast diversity and process of Nature like we are. It's incredibly exciting and humbling to realize that the mental shifts that our community has taken- going beyond just the aesthetics- and really working with Nature, as opposed to fighting Her- will likely yield some of the most important breakthroughs in the history of the aquarium hobby.

We're glad you're here. We're super proud to be supporters of this new, vital movement to create the ultimate expression of "natural" in our aquairums!

Stay curious. Stay fascinated. Stay diligent. Stay humble. Stay bold. Stay unique...

And Stay Wet.

 

Scott Fellman

Tannin Aquatics 

 

June 04, 2020

0 comments


A good facsimile? The value of analogs.

Often, I'll come up with an idea for the aquarium representation of a unique niche habitat, and will spend a lot of time researching the ecology and, more important to me- the function of  the habitat, before embarking on my project. 

And yeah, more often than not, I'll find that the plants, wood, leaves, or whatever that I need to really nail the project in a a full-on "biotopic manner" are simply not available to me.

And guess what? That's okay. I don't "get stuck." 

I just don't get stressed out about it.

You shouldn't, either.

I receive a lot of emails from fellow hobbyists who are "stuck" because they can't find that exact plant...And so they dramatically change, or even abandon their projects.

A real shame.

A suggestion, if I may?

Look for some sort of analog.

For example, a plant that is found in my region which can inhabit a similar niche. If I'm lucky, the plant even looks similar to the subject I'm trying to represent.

Case in point?

It's not a secret that flooded forests/grasslands are an obsession for me.

For the amount of "ink" I devote to talking about flooded forests and grasslands, you'd think that I'd have some good suggestions about how to plant these tanks, right?

Well, I do!

And of course, I'll share my recommendations with you on these in a minute. However, I also have a suggestion to our community in general about replicating these habitats:

Let's figure out which terrestrial plants can tolerate/grow/thrive under submerged or partially submerged (blackwater) conditions. Perhaps a more "realistic" (not in the hardcore "biotope aquarium contest" context, of course) avenue to explore in this regard?

Well, it starts by studying the wild habitats that we are trying to recreate...

Think about how they form. Think about how plants grow in them during the dry season, and what materials would be found on the forest floor or grasslands when the water is absent.

The forest floors are littered with leaves and seed pods from the overhead forest canopy. With some much material on the forest floor, the potential for a dynamic ecosystem in both the wet and the dry season is assured!

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Conceptually, this is absolutely easy to recreate in the aquarium/vivarium, right?

You can create remarkably faithful representations of these environments by simply working backwards...thinking about what the forest floors are like, what lives there, and how materials accumulate. What materials are found...And most important, perhaps- what trees do they come from?

I've got one tree for you to research...the dominant terrestrial plant in the South American flooded forests is Eugenia inundata... Don't think I'm not well underway in my (somewhat futile) efforts to see if we can secure fallen leaves of THIS plant!

Surely, if we can't find specimens of this plant, we can certainly find some similar plants to use in its place? At least, we could utilize wood, roots, or other materials to represent the look of this plant during its "submerged" phase. What would YOU use to represent this plant?

BTW "What would you use...?" is a great excercise for natural-style aquarium lovers who are obsessed with replicating weird habitats...Just sayin'...

And of course, there are many other plants which are found in these habitats, some of which we are likely never to see available; however, we could figure out some analogous species, right? Look at the picture below and get out of your own head space for a moment...

What species DO we find there?

You'll also find Iriartea setigera, Socratea exorrhiza, Mauritiella aculeata palms in these areas, just to name a few. I say, hit Google hard. Learn more about these. Find out what related species you can source.

(Mauritiella aculeata - Image by pixel too used under CC BY 2.0)

Like so many things from the Amazon, it's not easy (read that, damn near impossible) to secure many botanical materials from this region, so the proverbial "Don't hold your breath waiting for this" comes to mind! Oh, and the submerged grasses we see and drool over in those underwater pics from Mike Tucc and Ivan Mikolji of these habitats?

They're typically Paspalum repens and Oryza perennis.

Grasses.

And we DO have access to some species, such as Sedges and other riparian or semi-aquatic/bog plants from genera that are found in these regions, such as Papyrus (Cyperus), Acorus, Orzyas, etc. These are surprisingly popular plants in the hobby, and for the purpose of recreating one of these seasonally-inundated habitats, they're near perfect! 

Since many of these plants tolerate submersion for extended periods of time, they are of great interest to many of us for use in our aquariums. Perhaps most interesting to me is the area below the water, where the roots, fallen leaves, and shoots of plants like Cyperus are found in abundance.

A dramatic and inspiring area to replicate in the aquarium, I'd think. It's one thing to simply plant some in an aquarium- very cool...However, it's quite another to represent part of the ecological niche in which they are found in a unique and different way.

SO, sure, you can keep plants like Acorus in these submerged or partially submerged environments. Part of what interests me is that these are generally very hardy plants.

There are numerous species more commonly available from commercial nurseries in North American and European nations, so creating realistic representations of these habitats in our aquariums is more attainable than ever!

You just need to do a little research.

Now, there are also lots and lots of possibilities for creating unique aquatic displays with what I would call "aquatic analogs" of these terrestrial grasses and shrubs. In other words, incorporating some true aquatics to replicate the "look" of the flooded forests and grasslands, using representative species.

I freely admit that this is a total "cheat"- but when you think about it, it's a pretty good method that can be employed if you want to represent the inundation period for the theme of your aquarium, and aren't able to secure or grow the terrestrial/semi-aquatic analogs to the species found in these habitats.

I'm thinking about plants like Echinodorus tenellus, the "Pygmy Chain Sword", which grows in a most "grasslike" state, and certainly is representative of the grasses one might find on a flooded Panatanal or forest floor habitat in South America.

It's not hard to cultivate a little section of these plants in your representation of a flooded forest, and drop in a few leaves and botanicals, and achieve a relatively realistic-looking facsimile of this unique habitat!

Another great candidate that has a sort of "generic tropical/ terrestrial grasslike" appearance would be Cryptocoryne parva. This diminutive plant actually can be grown emerged, so for "semi-flooded" igapo or varzea biotope aquariums, it would be really adaptable! And when submerged, it bears strong resemblance to Paspalum or other tropical, submersion-resistant grasses. (It's the plant in the foreground in the below pic, BTW)

I suppose the old fave, Sagittaria, could also be employed for this purpose, but some species can achieve a larger size and perhaps ultimately be not as realistic, so you'd need to choose carefully. More exotic, but readily available as tissue-cultured, would be the beautiful Lilaeopsis mauritiana, a species often called "Micro Sword" for its appearance and size.

And of course, since we're representing a flooded forest floor or meadow, with patchy growth over rich soil and leaves, you likely don't need to have the full-on green lawn that planted aquarists strive for so ardently! A little bit of "open space" and some twigs, roots, dried weeds, bark pieces, a few seed pods, and exposed substrate and you're well on your way to creating a remarkably realistic, and undeniably cool tank!

Just plant some of it here and there in such a tank, and....well, yeah, you get the idea, right? 😆

And of course, you can always replicate the look and function of the areas where land and water meet. 

Now, sure, playing with these types of setups bring together hobbyists from a number of disciplines- vivarium/terrarium people, aquarists, planted tank enthusiasts, botanical-style aquarium lovers (that's US!), etc. Each party will have their own unique "take" on this process, as well as accompanying criticisms of the process and management.

However, "putting it all together" is really a fun process!

So, the most important takeaway here is NOT to be "stuck" because you don't have access to the exact plants that you'd fin in these habitats. You can research the ecology of these habitats, and find analogs that capture both the look and function of their wild subjects. 

Appreciate these analogs as functionally aesthetic means to recreate some of the world's most amazing natural ecosystems- during both the "dry" and "wet" seasons...

Stay creative. Stay studious. Stay observant. Stay unflustered. Stay motivated. Stay bold...

And Stay Wet.

 

Scott Fellman

Tannin Aquatics 

 

June 03, 2020

0 comments


Guarantees in the hobby- and dissing the "Aquarium Gods!"- Words to the wise...

If you read my blog and listen to my podcasts, you know my complete disdain for "guaranteeing" anything we do in the hobby to give absolute results. And that goes to stuff we do, as much as the stuff we use in the hobby. 

Huh?

Yeah, there are some things that we can do as hobbyists which will simply tempt the "Aquarium Gods" ( I am pretty certain that there ARE some!) to pretty much kick your ass...some more than others.

"Examples, Scott?"

Okay... How about this one:

Never move “just a couple of rocks and wood pieces” around in your aquascape within an hour of going to sleep at night- particularly on a week night, or before a morning when you just have to wake up early! Trust me, you won’t be getting restful sleep any time soon. It’s almost a certainty that moving one rock with the intention of “opening up space” or making a minor “tweak”, will lead to you pulling out a dozen rocks, a few driftwood pieces, a plant or two- or even the whole aquascape before the job is done, which could take hours and hours without completion.

I recall, in years past, attempting that one "quick adjustment" before heading out to work for the day, only to find myself deeply involved hours later, calling in sick to work, no closer to resolution- and the room filled with wet towels, lots of pieces of rock and wood all over the floor, and the wet footprints of a very frustrated fish geek! 

In fact, the job may not be done for days!

At some point, after numerous attempts to “correct” things, you’ll throw in the towel, and try to just make things “the way they were” before your started this futile endeavor…And guess what? You’ll NEVER be able to re-create what you had before…total bummer, which will take hours and hours to correct. We know this well- but we still do this.  Just don’t do it, trust me.

Changing light bulbs, settings, or the lighting system before a trip- This one is like the proverbial  “kiss of death!” I mean, really, changing light bulbs is no big deal, right? Oh, trust me, it is, especially when the new bulbs are a different spectrum (like if you use T5’s) ,or if you change up the colors or photoperiod with LED's-  or if you’re changing lighting formats from fluorescent to LED, for example. Not only will your plants likely react a bit differently when you expect- they will undoubtedly demonstrate their apparent displeasure at the worst possible time (like when you are away), and you may come back to a disaster in the making, or worse!

This shit really comes into play when you have a reef tank. Corals HATE adjusting to new lighting formats, spectrums, and photoperiods, and the inevitable meltdowns which occur are excasserbated when you're not around...and the whole aquarium can go into a big, stinky "death spiral!"  Coming home to a tank of dead coral is a sight and smell you definitely won't soon forget! Yeah, it really happens…Don’t ask me why, but it’s nerve-wracking enough just doing such a change when you’re going to be home…but if you’re leaving town...You are absolutely tempting fate! Be ready to replace some plants upon your return…at the very least! Yikes!

And just for my fellow reefers...

Turning the ball valve on your protein skimmer to make a "minor adjustment" to water intake when you’re in a hurry -You’re sooo screwed! I mean, there is no such thing as a “quick adjustment” to a protein skimmer…They’re totally finicky, and a sure ticket to headaches when you’re in a hurry…Or even when you aren’t, right? The same caution applies to making adjustments to your CO2 solenoid or feed valve on a reactor…ridiculously small adjustments are the only way to go…I mean, almost non-existent changes…

Air/water mix ratios, chemical feeds, and other dynamics can just get screwed up so easily it’s not even funny. Subtlety and time are everything with these kinds of changes. If you rush them, have plenty of Tylenol or your favorite pain reliever, wine, or beer available- it’s a virtual certainty that headaches will be waiting for you when you’re done. 

Taking a chance on that "cool cichlid" that was a perfect citizen in your buddy’s tank. -Are you KIDDING ME? SERIOUSLY? NO! NO! NO! It’s a virtual guarantee that the innocuous fish that resided in your buddy’s 400-gallon Malawi “community” tank for 7 years without incident will suddenly develop a great appetite for your precious juvenile Taeniolethrinops macrorhynchus or Mylochromis species. Yeah, your really rare, pricy ones.

I mean, you can practically take it to the bank!  Reefers know that the same goes for the anemone that never moved in your friend’s reef aquarium. Ask yourself, if the animal is such a model citizen, why is he or she getting rid of it? Prepare for knocked-over corals- or worse. Why on earth aquarists even think of tempting fate by trying these sorts of “additions” is beyond me sometimes!

"He seemed SOO nice!" (image by Oosh CC BY-SA 3.0)

Skipping quarantine with that "healthy" new addition- This isn't just superstition talking- it’s firmly grounded in reality..Skipping quarantine with one fish, or one coral, if you're a reefer- can open up your entire system to a limitless number of diseases or other maladies that can create dire consequences for your aquarium. Totally not worth it. We know this, but many of us tempt fate anyways. Some even get cocky and BRAG about it! And as we all know, bragging about shit like this a guarantee that the Universe- and those pesky "Aquarium Gods"- will even the score with you at some point.

Quarantine is a vital, logical practice that is employed by every public aquarium on the planet, and scores of successful hobbyists everywhere. You definitely are playing “Russian Roulette” with your aquarium if you skip this practice. Even if you know the source, have observed the fish repeatedly at the store or in its prior owners’ aquarium, it’s not worth it. Trust me.

Totally not worth it.

Going to a club auction with the intention of just “checking stuff out”- Pu-leeeze! Seriously? You have just about guaranteed that you’re going to leave with fry of something. In fact, you’ll probably leave with fry of several “somethings”. Auctions and "frag swaps" are irresistible to aquarium geeks, and the generosity of hobbyists is well documented.

“Oh, you’re a newbie? Here- have a frag of this Xenia, and some fry of these Nothobranchius guentheri…Super easy to keep…Can’t lose!” Even if you didn’t bring money, you’ll likely leave with way more than you intended. I have seen numerous times where aquarists even ended up borrowing from their teenage kid to grab a fish (because he was determined not to tempt him/herself by bringing cash to the event). So my advice if you’re attending a club auction? Just bring cash. That little group of Boraras? You'll find space in your fish room for them...somewhere! Seriously.

Bring a cooler. Leave restraint at home.

Okay, so there is just a quick rundown of “sure things” in the aquarium hobby. I mean, there aren’t that many certainties in this game, are there? Well, actually, there are. Sure, I focused on a few with some potentially bad consequences…There are no doubt countless others with the possibility of better outcomes…but it’s far more fun to highlight the bad ones, isn’t it? LOL

Oaky- that's a quick rundown of  some of my personal "guarantees"-based on decades of experience and learning-finally- not to tempt the "Aquarium Gods!" 

So, let’s hear your “guarantees” in the aquarium hobby!

I know that you’ve got way many more examples of this that you can add to our “database!"

So, go ahead- tempt fate...but don't say that I didn't warn ya!

Stay bold. Stay thoughtful. Stay diligent. Stay careful!

And Stay Wet.

 

Scott Fellman

Tannin Aquatics

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