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.
Calcium hardness is a term that measures that amount of dissolved minerals in your swimming pool water. These minerals not only include calcium but magnesium and sodium as well. In the event the calcium hardness is too high, there's a simple way to lower it by partially draining your swimming pool by using your filter. Pool supply stores have chemicals that help soften the water but can be costly and at times ineffective.