The Planted Tank Forum - View Single Post - Bioload too heavy for a sponge filter?
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Old 01-27-2013, 06:19 AM   #5
Hardstuff
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You will have high ph with the sponge. It is inferior to a good canister. You are more apt to have algae problems than with a canister filter.
If you have lots of plants you will be asking for trouble because of CO2 out gassing. It will do little or nothing at reducing DOC's from the water.
If you do lots of breeding & water changes it could be fine with livestock mostly set ups.
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