carbon and plant fertilizer + CO2 - The Planted Tank Forum
 
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post #1 of 4 (permalink) Old 01-21-2004, 06:05 PM Thread Starter
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I had removed my carbon from my filter since I started to add liquid fertilizer to my tank. Do I have to do that or will the carbon remove all the nutrients from the fertilizer if not removed?
I am in the process of making my home made CO2 canister to add to the tank. ? is what are the concerns with the addition of CO2 to a fish tank + carbon in filter + fertilizer?
thanks for your help
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post #2 of 4 (permalink) Old 01-21-2004, 06:41 PM
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Using activated carbon is detrimental to plant growth, since it absorbs trace elements, among other things. Why do you want to use carbon in your filter? With regular water changes, it should not be necessary, unless you use it for a specific purpose, say removing medications from the water, or reducing tannins that leach out from unsuitable driftwood. Even then, water changes might be the better option.


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post #3 of 4 (permalink) Old 01-21-2004, 06:43 PM
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You don't want carbon in a planted tank because it DOES absorb the nitrates, phosphates, and trace elements the plants need to thrive.
If you have more than 1.5watts per gallon of water in the tank, then you should be addnig CO2. Think of CO2, light, and fertilizer as the 'holy trinity' of a successful planted tank. As soon as you get light cranked up above 2 wpg, CO2 is mandatory, and without it you'll end up with more algae, and weak looking plants.

Believe me, carbon on a planted tank is a no-no.
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post #4 of 4 (permalink) Old 01-21-2004, 09:20 PM
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Does activated Carbon stay reactive or does it become non reactive once a layer of bacteria forms on it?
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