Low Total Alkalinity can cause corrosion of equipment, etching of plaster, pH bounce, and eye and skin irritation. The ideal range for Total Alkalinity is based upon the type of primary sanitizer used (80-100ppm for sodium hypochlorite, calcium hypochlorite or lithium hypochlorite and 100-120ppm for dichlor, trichlor and bromine tablets). The ideal pH range is 7.4 to 7.7.