Adele ring. In mathematics, the adele ring (also adelic ring or ring of adeles) is defined in class field theory, a branch of algebraic number theory. It allows one to elegantly describe the Artin reciprocity law. The adele ring is a self-dual topological ring, which is built on a global field.
Real softeners generally last 20+ years EVEN on ludicrously hard water while the service life on a pre-built softener seems to be under 5 years (if you're lucky) on really hard water and lasting longer than that is a rare exception.
The hardness of your water converts to 7.06 gpg. You should set your hardness to 8-10 gpg. If there are only 2 people in the household, you should set the hardness level to 25 gpg. For best results the softener should regenerate once a week. With low water usage the softener will only regenerate every 10-12 days.