Use some sort of > sponges, even in big tanks if you like. What's the rest of us think on > this one? I agree, sponges are excellent. Not only do they provide adequate filtration the fry will happily graze the sponge for whatever is edible on it. Another one I like is the corner box filter with media of filter floss and peat granules. Happy Halloween (just a bit early). Anybody hear of Apisto > Cruzi. My local store was selling them and I have not seen or heard of > them. Not in Linke and Staeck's Dwarf Cichlids. They are in the Aqualog book and also I think the Axelrod Lexicon of cichlids, don't know any more than that. Ken.