Regeneration Cycle: A period when the water softener system flushes out the accumulated minerals. The duration and frequency vary from system to system. Grain: Refers to the amount of minerals a ...

as water softeners regenerate once per week. For example, if your water hardness is 10 grains per gallon and your household uses 300 gallons per day, your calculation would be 10 x 300 x 7 = 21,000.

An average softener with 1 cu. ft. of resins (30,000 grain, 10 ” x 44 ” tank) should use about 6-8 lbs. per regeneration to ...