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.
As a homeowner, CLR has been our âgo-toâ staple for a tough mineral and calcium build-up remover for over 30 years. We used it for all sorts of cleaning jobs when we lived in the Northeast, and we use it more often since we now reside in the Southwest.