Calcium Hardness Treatment for Pools 4 lbs.

Use Calcium Hardness Treatment to increase low pool water hardness. Low hardness can cause staining, discoloration, foaming, and other problems. Check pH with Hardness test strips, then correct as necessary per label directions.

Product notes: Contains calcium chloride, 100%. 3 lbs. of Calcium Hardness Treatment will increase the hardness level of 5,000 gallons of pool water by approx. 50 ppm. Complete directions included on package.

4 lbs.