I have two oscars, a red pike chiclid and a jack dempsey. My pike developed hole in the head, and while trying to figure out how to treat it I ran accross a web site that said oscars and cichlids in general like to have a 60% or better sand bed. I figured this would work nicely since gravel is a pain to get completely clean anyway. What it didn't mention is any specific gravel. This is where I run into problems. Most play sand is very fine and rather dusty when it's even slightly adjitated, that can't possibly be the sand they were talking about, could it? Does anyone know of a sand that doesn't clound up the tank?