Poolife® Calcium Plus raises the calcium hardness of swimming pool water. The ideal calcium hardness range is 200-500ppm. Maintaining calcium hardness below 200ppm may cause corrosion of metal and plaster surfaces.
Test calcium hardness monthly and add this product if calcium hardness is below 200ppm.
Use convenient dosage chart on product label.
If a large amount of Poolife® Calcium Plus is required (more than a 50 ppm addition), add in 1/3 increments, allowing 4-6 hours between additions.