tannins and plants - Page 2 - Tropical Fish Keeping - Aquarium fish care and resources
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post #11 of 12 Old 01-30-2010, 09:28 AM
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Not really but tannins makes the water more acidic and soft. If you have soft-watered fish like my discus, they will benefit from tannin. The tannin also mirror the black-water that or amazon fish that fish loves and can make fish breed.

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post #12 of 12 Old 01-30-2010, 10:42 AM
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Originally Posted by stephanieleah View Post
Well like I said my 10 gallon, "coffee-water" (good analogy Angel) has plants that are doing much better than in the clear water tank, but many other factors at play there.

So, bottom line, the tannins themselves don't benefit the plants other than creating a more acidic environment closer to what the plants prefer in their natural environment.

I think there was confusion on the purpose of the question. I had read on another forum that plants will "use" the tannins in the water, but it seems that this is not so.
I'd like to see that other post for my own interest; you can forward it to my personal email that you have Stephanie. Thx, B.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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