In a message dated 1/27/99 8:47:07 PM Mountain Standard Time, mike@datawest.net writes: > It runs about 3.5 dGh out of the tap. I have been using it as is for our > Pencil Fish and Tetras. > > The thing that is weird is that the pH of the tank always runs about 7.8. I > would think that with this soft of water, that the pH would stabilize lower. > You may have low General hardness (Ca++ and Mg++) but high alkalinity (CO3 -- ). You may have an above average oncentration of Sodium bi-carbonate. You an redue this alkalinity easily using muriati acid. You will need to experiment carefully with it, and keep good records of what you are doing. 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"!