Water needs calcium hardness. If your levels are too low, a small addition of Calcium Hardness Increaser brings the levels up safely while not clouding the water
When levels are ideal, you will prolong the life of your pool or spa
Prevents water from becoming corrosive and damaging your pool's plumbing and heater
Helps maintain calcium hardness levels between 150-300 ppm
Stops staining and etching of pool surfaces caused by low hardness levels

Weight: 7 lb bottle
Item Number: POOL CENTRAL BL 5507