Leisure Time Spa Balance Alkalinity Increase (30412A) Ideal range of total alkalinity in a spa is 80-120 ppm Compatible with all sanitizers including bromine, chlorine and biguanide For more than 25 years, Leisure Time has been the premier name in spa water care Compatible with chlorine, bromine, ozone and biguanide sanitizers Balance spa alkalinity and hot tub alkalinity to prevent ph bounce and other spa water problems. Effectively raises alkalinity levels