Clorox Pool&Spa 4-lb Calcium Hardness Increaser Pool Balancer Item #30752 | Model #VIL333BL they install easily in the

they install easily in the up or down position

the compact design fits easily under the kitchen sink

This light provides a 6-year limited manufacturer warranty

Central heating and cooling system

) and replaces AP5955766

Clorox Pool&Spa 4-lb Calcium Hardness Increaser Pool Balancer Item #30752 | Model #VIL333BL they install easily in theClorox 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.