if you have wrasses and sand-sifters I think it'll all get mixed up anyways, blown around and probably not deep enough to do what a dsb does.
Other than actual sand-fines I can stir my sand up and it's clean. So long as you have decent flow and a hard-working sifter I'd go shallow and pass on the sugar grains...
just my opinion tho... i don't actually know anything =)
|