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.
In case you don't explain that, the fact is that the average softener will use 30-50 gallons of water, at the rate of 1.5 to 3.0 gpm in three periods of time totaling 12-18 minutes wit hup to an hour pause between them, on average once a week from 2:00 AM and 3:15 AM.