IME quilt batting is better for mechanical filtration (removing solid waste) than for biological filtration. It beats spending money for cartridges. You can buy quilt batting by the yard.
fishcatch22 said:been leaving what sitting on the filter?
by biological filter I mean the bacteria that break down ammonia.
kveeti said:Yes, the batting will collect good bacteria and act as part of your whole biofilter for the tank – most anything in the filter will. Is it the best thing? Probably not but not the worst thing, either - just another thing. Do you rinse the batting out once in a while in old or treated tank water to get rid of the excess gunk? My thought is batting is more mechanical because it is so fine, it collects gunk and compresses more. If it gets too gunked up it will become less efficient. An extra sponge sitting on top might be better.
NeonFlux said:So your point is that at least im rubbing good bacteria on my tank, instead of washing/wasting away the good bacteria on the sink?So this good bacteria constantly grows and grows, right? Also is it true that if you keep gravel in your tank, the pebbles too, will grow good bacteria? :idea: