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 correct size water usage and softener should regenerate at least every 9 days, but usually regenerates approximately every 7 days. Therefore, a family of 4 would regenerate at least 4 times per month. If they used a Fleck softener, they would use: 76 lbs of salt per month, which is 912 lbs per year.