Southern Association of Colleges and Schools Commission on Colleges. Bob Jones University is a candidate for accreditation with the Southern Association of Colleges and Schools Commission on Colleges to award associate, baccalaureate, masters, and doctorate degrees.
hthÂ® calcium hardness increaser, 4 lbs. hthÂ® calcium hardness increaser, 4 lbs., is used to raise the calcium hardness of swimming pool water. Low calcium hardness may cause the pool water to be corrosive, resulting in damage to pool surfaces and equipment.
Raising your calcium harness with calcium chloride: First test your pool for calcium hardness. Determine how many ppm you are from the midpoint of the ideal calcium hardness range. Calcium chloride is the main chemical used to increase water hardness for pools. Add this per instructions on the product label.