Proper calcium hardness levels help prevent corrosion of equipment and etching of spa surfaces. Use Calcium Hardness Increaser to raise calcium hardness to the proper level. For areas with high calcium in the source water, use Stain and Scale Control to prevent formation of scale.
- Model 32534000-04
- 1 oz. of product per 500 Gal. increases hardness by about 10 ppm
- Product is compatible with all sanitizers including bromine, chlorine and biguanide
- When calcium levels are too low, spa water can be foamy and corrosive to equipment
- Raises the calcium hardness level of your spa water