I'm trying to find some new substrate to replace my play sand in my 55 gallon. I'm looking for something black or dark brown. I have looked at Tahitian Moon sand but I'm not sure how safe it is for my cichlids since it's made of glass. It also says it's not good for bottom dwellers and I have catfish. I've also looked into colorquartz but no distributors are anywhere near me and shipping is outrageous. So I'm looking for more option, something i just haven't thought of yet.

