SpaPure Hardness Increaser
Water needs calcium hardness. If your levels are too low, a small addition of Spa Pure Calcium Hardness Increaser brings the levels up safely while not clouding the water. When levels are ideal, you will prolong the life of your spa. The water will also be less aggressive and corrosive.
Apply to the spa while the water is circulating or as it is being filled
1 oz. per 100 gallons of spa water will raise calcium hardness level approximately 10 ppm
16 oz. bottle
SpaPure Hardness Increaser SDS (dry)