In a message dated 2/29/00 1:09:07 AM Mountain Standard Time, kl@roe.ac.uk writes: > That must be really weak acid, 25% acid sounds a lot? > Ken. It starts at 31%. Cut it by 4:1 and you end up at 7-3/4%. It is still fairly strong. I originally experimented with 2% HCl, which has a pH of 0.85. At 7-3/4% it is effective and manageable. 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"!