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Posted by kiwiturtle on April 09, 2003 at 14:39:27:
I've been reading stuff about biological filtration from various sources (online mainly). Some companies have a specialized technology (e.g. Bio-Max from Fluval) and some just use a sponge (e.g. Aquaclear). Assuming that nitrogen-eating bacteria will grow on any porous material with good aeration, why is it that many sponge-based filtration units (e.g. Fluval plus, Zoo Med Microclean) don't always mention biological filtration with their products? Is it true that a sponge in a filtration unit is a good enough biological filter after the bacterial colony is allowed to build up? Thanks for your input!
