From this article -
http://www.reefcentral.com/forums/sh...hreadid=352087 Dr. Ron recommends 20 square feet of sand to graze on
"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."
Just some info that surprised me about these snails since so many reefers seem to have them.
Vickie