When mixing my RO water with 5% to 10% of tap water, does it make a difference that I only have tap water that has been through a water softener? Or should I start thinking about placing a tap before the softener. I live in MN and have very hard water with a PH of around 8.9. I'll have to check my records but I think the GH was around 35 drops to get a color change with a tetra test kit. ------------------------------------------------------------------------- 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"!