Made naturally with sun, wind and time. Our solar salt water softener crystals are a 99.6% pure and a natural choice for treating your hard water. It's a great way to put nature to work softening your hard water. Diamond Crystal Solar Naturals Water Softener Salt Crystals have a white, opaque appearance. Solar Naturals Salt Crystals are recommended for use in all water softeners
Typical 99.6% pure salt (sodium chloride)
Made naturally with sun, wind and time
Solar salt crystals are naturally white and opaque