In a message dated 10/15/00 8:28:24 PM Mountain Daylight Time, emartina@uiuc.edu writes: > Just made me think, I have one of those red lava rocks with three big holes > in it in my tank. I am not sure what lava rock are made of, but could that > be buffering my tank? Thanks! Nope. Lava is chemically neutral. Check the other stuff. Then get back to us. Bob ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!