Carbon vs good organics vs tannins - Tropical Fish Keeping - Aquarium fish care and resources
 
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post #1 of 6 Old 05-05-2011, 10:08 AM Thread Starter
Carbon vs good organics vs tannins

Hi All,

I was wondering if anyone could offer advice on what to do about tannins in the aquairum. My tannin levels are extremely high because of soil substrate and loads of driftwood. It is a heavily planted tank, so I have been doing water changes to reduce the tannin levels but at this point the water is so dark that all my plants have been behaving like its a low light tank. Should I try running carbon through my filter? I am worried about it taking out nutrients my plants need. Is the best course of action to just bring up the amount of water changes?
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post #2 of 6 Old 05-05-2011, 10:22 AM
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[quote=SinCrisis;665969]Hi All,

I was wondering if anyone could offer advice on what to do about tannins in the aquairum. My tannin levels are extremely high because of soil substrate and loads of driftwood. It is a heavily planted tank, so I have been doing water changes to reduce the tannin levels but at this point the water is so dark that all my plants have been behaving like its a low light tank. Should I try running carbon through my filter? I am worried about it taking out nutrients my plants need. Is the best course of action to just bring up the amount of water changes?[/quote


Water changes, or removing the wood and boil it.
I just set up a tank for some plecos and added some wood too big to boil.Tank is dark tea colored and fresh carbon only clears it for a day or two.
Is a quandry with planted tank,both carbon and water changes could remove nutrient's as well as tannins.

The most important medication in your fish medicine cabinet is.. Clean water.
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post #3 of 6 Old 05-05-2011, 10:38 AM
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I'm having the same problem right now. Multiple wc a week is the only thing I have found that has helped.
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post #4 of 6 Old 05-05-2011, 10:41 AM Thread Starter
Well 3 pieces of the wood are very old, still leeching tannins though, and are too big to boil. Secondly, I think most of the tannins are from the soil under-layer which had a lot of wood chips.

Well I have been dosing ferts right after changing water to help replenish lost nutrients but with carbon any additional ferts would be absorbed right away, but it is becomming a hassel changing 10 gallons of water every couple of days to keep the water a lighter shade of brown. :-/

Im hoping someone will have a solution to this problem thats not so high maintenance..
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post #5 of 6 Old 05-05-2011, 12:01 PM
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I think the only solutions have been mentioned. If it is occurring from the "soil" then obviously removing all of it is the only solution. I suspect it could leech for some time.

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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post #6 of 6 Old 05-05-2011, 12:08 PM
I'd consider pulling the wood out outta the aquarium. Perhaps too large to put in a pot on the stove, but why not get a rubbermaid or sterlite bin that's big enough...put outside and bring a big pot of water on the stove to a boil and pour over (a few times) and soak, repeat, and water change in the bin until the water is good ?

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