Features:Hardness Increaser is used to raise the calcium hardness level in the pool to the ideal range. Prevents water from becoming corrosive and damaging pool's plumbing and heater. Stops staining and etching of pool surfaces caused by low hardness levels. Size: 0.5kg(or 1lb),...
Learning how to manage and control the calcium hardness in your pool is a big step toward keeping it clean, clear, and swimmable all season long.
Calcium hardness increaser.(New Products)Keim, Joshua