sponge on powerhead

Mar 10, 2005
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0
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Columbus, OH
I added sponges to my powerheads to act as a pre-filter, (from a sponge filter) I was wondering if this would cause any problems at all or if it would be okay... thanks in advance
 
The sponge may become a nitrate factory if you don't change it out at least once of week. OK for the fish, but not good if you have corals.
 
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