I have been using this material for about a year now. I have it in about 10 of my tanks and have not experienced any problems yet. I'll pay close attention though. Michael -----Original Message----- From: Mike Downey [SMTP:windwalker@uky.campuscw.net] Sent: Monday, February 01, 1999 1:29 PM To: apisto@majordomo.pobox.com Subject: RE: Black Beach Sand >Black Beauty sandblast abrasive is coal slag. I am familiar with it as a >sandblast abrasive, >but had not considered what it might leach into an aquarium. I'll look into >it and post anything I find. > > >Susan A. Drozdz > I use Estes Marine Sand in the black color. It does not influence pH . It is too fine for UG filters. It can be purchased in larger commercial size bags if you can get a masonary dealer to order it for you. I get it in aquarium bags (5#) and 6 to a box for about $1.50 per bag (#5). I have it in under my West African dwarfs and corys. And also in the 30 gal with my trio of apistos. It does not hurt the corydoras barbels, as they dig for black worms all the time. MikeD ------------------------------------------------------------------------- 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"!