In a message dated 1/29/99 12:35:20 PM Mountain Standard Time, ddunlop@nortelnetworks.com writes: > Thought that I might also ask again if anyone has used vinegar instead of > phosphoric, hydrochloric, sulfuric and other acids. I (impatient me) have > some Nijsseni that seem happy so far as I have experimentally lowered the pH > in their planted tank to 6 from 7 using vinegar. No, I haven't but along the same line (organic acids) the pond section of the local Home Despot is selling a pond pH adjuster based on Citric acid. I suspect it may be attacked by or promote the growth of bacteria in the tank. Just a personal suspicion, nothing to back it. 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"!