Increases calcium hardness - Calcium Plus
Calcium Plus is a highly refined calcium rich mineral designed to increase total hardness in water. A clean and white ball, it is used when the calcium hardness is low in order to increase it. This prevents premature deterioration of surfaces including canvas and concrete, and corrosion of equipment and metal surfaces. Calcium hardness also plays an important role in water balance, increasing comfort, the efficiency of other products and maintenance costs.