I bought something called "Black Beauty" at a sandblasting supply store. It cost about $12 for 100 pounds, but I beleive only the largest available grade wiill work in an undergravel-filter setup. When I mentioned "Black Beauty" about a year ago on this list, someone sent out warnings that it contained some element that is supposed to be harmful. Well, I've had it in my two show tanks for several years and it has never caused a problem, and other aquarists in my area have also been using it. It is inert. I think it is very attractive as it is pitch black. It does not fade throughout time as does the black-colored pet-store gravel. Even though it is used in sandblasting, it is not abrasive. --Randy IDMiamiBob@aol.com wrote: > Steve writes: > > > Why not just use black silica sand? If I remember correctly,it was about > > 22.00 cdn. for a 40 kg.bag, here in Vancouver. > > Because I can't find any of THAT here either. :-) > > Bob Dixon > > ------------------------------------------------------------------------- > This is the apistogramma mailing list, apisto@majordomo.pobox.com. > For instructions on how to subscribe or unsubscribe or get help, > email apisto-request@majordomo.pobox.com. > Search http://altavista.digital.com for "Apistogramma Mailing List Archives"! ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@majordomo.pobox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@majordomo.pobox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!