Biological Filteration - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 06-21-2005, 02:27 AM Thread Starter
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Biological Filteration

can you have too much biological filteration?
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post #2 of 6 (permalink) Old 06-21-2005, 02:31 AM
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No such thing as too much, as long as you don't mind spending the money/effort.
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post #3 of 6 (permalink) Old 06-21-2005, 07:49 PM Thread Starter
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thanks; I read somewhere too much affects plants but then I read the better bological the clearer the water
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post #4 of 6 (permalink) Old 06-21-2005, 09:05 PM
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By biological filtration are you specifically referring to activated carbon filters? If so, then in a planted tank setup, those filters can take out needed nutrients that plants need to thrive. So, most folks on these boards would advise against the use of carbon filters unless for short term use to remove something from the tank (e.g. medications).
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post #5 of 6 (permalink) Old 06-22-2005, 01:15 AM
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I think activated carbon is commonly referred to as "Chemical Filtration", which does take things out of the water that are needed for plant growth, so it is not recommended.

Biological filtration means supplying plenty of surface area for "beneficial bacteria" to do their thing and convert NH4 to NO2 to NO3.

However, in a normally stocked and balanced planted tank the plants both take up the intermediate products of the N-cycle, and provide surface for beforementioned bacteria.

So while you can fill up a bucket with bioballs and ceramic noodles and whatnot and run the tank water through it, it will not hurt or help the tank.

Clearer water is really a result of mechanical filtration through sponges, filter wool/batting etc, with diatom filters achieving the most extreme clear water.


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post #6 of 6 (permalink) Old 06-22-2005, 02:39 AM
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Doh! My bad. Trying to cram in one last reply before heading out of the work place !
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