Clorox® Pool&Spa™ Calcium Hardness Increaser raises low total hardness levels in your swimming pool that can cause damage to your pool surface. Ideal for plaster pools and soft water areas. Use it to raise total hardness levels in your pool that are below 175 ppm. Increasing total hardness in your pool prevents surface damage like corrosion, staining, and etching. Five (5) lbs. Per 10,000 gallons will raise increase your total hardness levels by 50 ppm.
Increases low total hardness levels in swimming pool water
Prevents corrosion, etching, and staining
Prevents pool surface damage
Ideal for plaster pools and soft water areas
For best results, use with the Clorox Pool app
Ideal soft water areas due to the unique challenges these pool owners face
Maintain 175-225 ppm total hardness