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.
The use of Calcium based sanitizers in your pool will contribute to Calcium Hardness levels, raising the level - Calcium Hypochlorite shock, or calcium based chlorine tablets. Keeping your Calcium Hardness levels in your pool at the proper level, around 200-400 ppm, is one of the important facets of water balance.