Clorox Pool&Spa 4-lb Calcium Hardness Increaser Pool Balancer Item #23333 | Model #PVC 00324 1000 Optipath 360 Technology provides 360°

Optipath 360 Technology provides 360° of direct access to the smoke sensing chamber

Save energy with automatic dryness control

The waste outlet is designed for use in tubular drain applications for best performance

Better fire protection than wood-based siding

Clorox Pool&Spa 4-lb Calcium Hardness Increaser Pool Balancer Item #23333 | Model #PVC 00324 1000 Optipath 360 Technology provides 360°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.