Clorox Pool&Spa 4-lb Calcium Hardness Increaser Pool Balancer Item #1060922 Model #AP-3651 This fast acting formula kills

This fast acting formula kills on contact and destroys weeds down to the root so they don't come back

for a smooth

Reliability

Maximum working temperature of 180 degrees Fahrenheit

30 secs-1 for medium applications and 1-2 minutes for heavy applications

Clorox Pool&Spa 4-lb Calcium Hardness Increaser Pool Balancer Item #1060922 Model #AP-3651 This fast acting formula killsClorox 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.