Hello Edison I dont know about water that is acidic and hard but i do know that you can have alkaline soft water. A friend has some , pH of 8.0 and only 60 ppm hardness. John ------------------------------------------------------------------------- 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"!