On May 7, 2:53*pm, Daniel Prince wrote:
Gary Slusser wrote:
Water is either hard or soft. In residential that means 0 gpg is soft
or 1 or more gpg is hard. The goal is consistent 0 gpg soft water
after the softener. A softener allowing more than 1 gpg through it is
not working right.

Is "gpg" grains per gallon? *If it is how do I convert gpg into
parts per million? *
--
I don't understand why they make gourmet cat foods. *I have
known many cats in my life and none of them were gourmets.
They were all gourmands!

There are 17.1 ppm or mg/l in one gpg (grain per gallon).