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.
Water softeners are built to last for at least 10 years. When properly maintained, the softeners can last several years beyond that time.
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.