Calcium Hardness 6lb
224 in stock
Calcium Hardness to prevent staining and corrosion. Low hardness levels can result in corrosion of pool surfaces and fixtures. When water hardness levels drop below 150 ppm, you need to add Calcium Hardness. Instantly raise calcium hardness in your pool water.
|Dimensions||9.5 × 6.5 × 4.5 in|