I have found a product that uses 10% Citric Acid to lower PH in Aquariums and Ponds, this product does not contain any Phosphate is this chemical soluton advisable? Thanks, Edison Yap Philippines ------------------------------------------------------------------------- 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"!