Calcium Hardness Increaser
* Raises the hardness (calcium) level in your pool to the ideal range
* Prevents water from becoming corrosive and damaging your pool’s plumbing and heater
* Stops staining and etching of pool surfaces caused by low hardness levels
* Great for use in areas where soft water is a problem
* Recommended dosage: 5 lbs. per 10,000 gallons to raise the hardness approximately 40 ppm