Scott writes: > Bio filters are not functional at a pH of 5.0 are they? Why not? Sure they are. Bob Dixon Cichlid Trader List Administrator http://cichlidtrader.listbot.com ------------------------------------------------------------------------- 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"!