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TOPIC: Humic Subtances in Freshwater Aquariums

Humic Subtances in Freshwater Aquariums 2 years 4 hours ago #67100

  • muddybear
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Really interesting read-think I'll give the "tank tea" a go. Everything to gain and nothing to lose.
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Humic Subtances in Freshwater Aquariums 1 year 11 months ago #67102

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My current path of research, one most of you know I've been on before, involves the affects of humic substances on nitrate...... can humic substances help protect fish fish from the effects of nitrate. We know they protect fish from ammonia and nitrite but uptake for these two toxins is via the gills. Nitrate uptake is via absorption (osmosis through the skin). Thus far, all I've found is a single pertinent article. While this article does not involve the interaction of humic substances and aquatic life (in the protection from nitrate), it is a promising start, as it indicates the ability of humic substances to potentially (partially) remove nitrate from the system.

link.springer.com/article/10.1007/s10311-009-0201-6

Adsorption of nitrate on humic acids studied by flow-through coulometry
Interactions of nitrates with humic acids are studied by means of flow-through coulometry. It was found that nitrates are adsorbed mainly by solid humic particles and a small amount is bonded to dissolved humic macromolecules or aggregates. Langmuir and Freundlich adsorption isotherms were tested for mathematical description. Two linear regions were observed in the case of both used models for normalized coordinates. The intersection is the same for both isotherms and corresponds with the measured adsorption maximum (>80% adsorbed). It indicates two principal sites for nitrate adsorption.

It just makes too much sense. It's too logical. Nature has a way of protecting life. The river floods into the jungle and then recedes, leaving behind lakes, ponds, and pools, full of amazonian fish. The pools shrink over the dry season, with nitrate accumulations building up. However, being in the middle of the jungle, there are numerous leaves, twigs, nuts, and such leaching tannins and humic substances into the water, with the concentration of these humic substances increasing in conjunction with the increase in nitrate levels, until the next rainy season, during which floods rescue the trapped fish, trapping others as the cycle repeats. Nature has a way of protecting life. Perhaps this is one of them.

However, I have yet to find any studies to this effect.

Another study, this one indicates bacteria capable of utilizing humic substances as electon donors for aenaerobic resipiration (denitrification), which would safely solve the "Carbon Source" issue with classic denitrification.

Diversity and Ubiquity of Bacteria Capable of Utilizing Humic Substances as Electron Donors for Anaerobic Respiration

aem.asm.org/content/68/5/2445.short
120g - Tiger Oscar, Parrot Cichlid, SDs | 55g - 24 Year Old Kissing Gourami
55g - Angelfish/Bolivan Rams | 40g GBRs - 20g Apistos
65g Blackwater Planted Discus Tank
4 Cats, 2 Shelties, 1 Rat Terrier, 1 wife, 1 old lady, 1 sub-adult, 1 rug rat.
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Humic Subtances in Freshwater Aquariums 1 year 11 months ago #67112

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So for a period of months, the nitrate buildup in the pools has little to no deterimental affect on the fish? And the fish affected adversely by increase in nitrates would not live until the next mating season or have trouble mating?
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Humic Subtances in Freshwater Aquariums 1 year 11 months ago #67113

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That question is part of the equation. Certainly a pertinent aspect we would need an answer to.

We know fish survive these locations. But beyond that, at the moment, I don't know. :confused:
120g - Tiger Oscar, Parrot Cichlid, SDs | 55g - 24 Year Old Kissing Gourami
55g - Angelfish/Bolivan Rams | 40g GBRs - 20g Apistos
65g Blackwater Planted Discus Tank
4 Cats, 2 Shelties, 1 Rat Terrier, 1 wife, 1 old lady, 1 sub-adult, 1 rug rat.
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Humic Subtances in Freshwater Aquariums 1 year 11 months ago #67116

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Kmuda, can you repost your current recipe for tank tea? I have the peat and the catappa leaves, and green and/or rooibos (decaff) tea bags...but I know you were adding more variety as you played around with the tea. I'm having a hard time finding your most recent suggestions for "ingredients." It seems to be doing great things for my Oscar, and it's a fascinating topic for my life science classes.
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Humic Subtances in Freshwater Aquariums 1 year 11 months ago #67118

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Winsor below is a paste of the answer when I just asked last week! ☺️


Read this page post #66783
www.oscarfish.com/forum/general-freshwat...html?start=130#66783

Take 1 gallon of tea and add to tank.

Jessica
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Humic Subtances in Freshwater Aquariums 1 year 11 months ago #67121

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I fixed the above link. It should work now.

Giys, the "recipe" is to add as much stuff as you can. Different brands of peat. Catappa Leaves, Alder cones. Oak leaves, magnolia leaves. Roiboiss tea, green tea... the list goes on and on. Banana Steams, for instance.

I am currently investigating (all from tanninaquatics.com):

Jackfruit Leaves
Savu Pods
Encontro Pods
Rio Frvta :Grande" leaves (a type of palm)
Guava Leaves
Indian Casuarina Cones
Coco Curls

The quantity to use of each is whatever. Add as much as you can. Try to get the "tea" as dark as you can. Then adding a bit of this and a bit of that each week will keep things going nicely.
120g - Tiger Oscar, Parrot Cichlid, SDs | 55g - 24 Year Old Kissing Gourami
55g - Angelfish/Bolivan Rams | 40g GBRs - 20g Apistos
65g Blackwater Planted Discus Tank
4 Cats, 2 Shelties, 1 Rat Terrier, 1 wife, 1 old lady, 1 sub-adult, 1 rug rat.
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Humic Subtances in Freshwater Aquariums 1 year 11 months ago #67267

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interesting how would you go about drying thing like oak and maple leaves
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Humic Subtances in Freshwater Aquariums 1 year 11 months ago #67268

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facemc shooty wrote:
interesting how would you go about drying thing like oak and maple leaves

You don't. Nature does it for you. Once a tree drops its leaves, you simply collect them. Never, Ever, Ever, use Green Leaves you picked yourself.
120g - Tiger Oscar, Parrot Cichlid, SDs | 55g - 24 Year Old Kissing Gourami
55g - Angelfish/Bolivan Rams | 40g GBRs - 20g Apistos
65g Blackwater Planted Discus Tank
4 Cats, 2 Shelties, 1 Rat Terrier, 1 wife, 1 old lady, 1 sub-adult, 1 rug rat.
The administrator has disabled public write access.
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