syno321 Posted September 6, 2005 Report Share Posted September 6, 2005 I highly recommend Ultimate sponge filters by Regina111. They are excellent for biological filtration, but more than that, are the only sponge filter I've ever used to do such a great job mechanically filtering, as demonstrated by their efficiency in my 40 gal. hatchery. They can be obtained on aquabid. Quote Link to comment Share on other sites More sharing options...
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