Some of the softening salt pellets sold at the supermarket or home improvement store contain a high level of water-insoluble matter or impurities. This insoluble matter can cause buildup in the reservoir or cause your softener to malfunction. If you notice buildup, the brine tank will need to be cleaned more often. So as you shop for softening salt, look for labeling on the salt pellet sack that indicates you’re getting the highest purity level.
There is one last option for your brine tank—potassium chloride. It may be used in place of salt (sodium chloride) in the brine tank to regenerate the softening resin. Potassium chloride is 99.9% sodium free and an alternative for those who are looking to reduce sodium intake.
Be aware that potassium chloride pellets are generally more expensive and not as easy to find as salt pellets. If switching from salt to potassium chloride pellets, it may be necessary to increase salt dosage program settings on the valve by 10% to ensure proper regeneration of the resin. Contact your local WaterTech dealer for assistance.