Walter, I don't think anyone can help you without knowing two important pieces of information: 1. What do you want your hardness to end up as? 2. What is the hardness (dGH & dKH) of your well water? If you are using it to produce water for blackwater species, I would use straight RO and add peat or some sort of blackwater extract. Mike Wise Walter McCree wrote: > Hello all > I broke down and purchased my first RO unit today. My question is how much > treated water do I want to mix with my well water. My water is very hard > but I don't remember the exact reading and the PH is 7.6. It's well water > but I don't know if that will help with this question. The store I > purchased the unit from said to start with 1 part treated water to 3 parts > well water. Is there a set formula or is it just done with trial and error > until the desired readings are met. > > Thanks, > Walter > > ------------------------------------------------------------------------- > 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"! ------------------------------------------------------------------------- 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"!