Here is what Dr. Ron says about the requirements of fighting conches - "Yes, they look like prime mature specimens of Strombus alatus, the Florida Fighting Conch. These guys need a lot of sand surface with algae on it, to graze on. Figure about 20 square feet each. They may take algal wafers or nori as food, but by and large they graze on diatoms on/in the sand.
They will also need a sand bed about 4 to 6 inches deep, simply to bury into." from -
http://www.reefcentral.com/forums/sh...readid=352087&
I HTH
Vickie