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.
Water hardness (Calcium in water) is measured in grains per gallon (GPG) or milligrams per liter (mg/l, equivalent to parts per million, or ppm). Water up to 1 GPG (or 17.1 mg/l) is considered soft. Water from 1 to 3.5 GPG is considered moderately hard.Water from 3.5 to 7 GPG is Hard Water.he Fix: The solution to the problem is to address the Calcium In Water. While there are chemical treatments that do this, the most practical solution is a Calcium Scale Reduction System. The heart of a Scale Reduction System is a mineral tank. It's filled with small beads, also known as Filtersorb.