This unique formulation locks in pH levels between 7.2 - 7.8, eliminating pH drift and continuous water adjustment. Lasts from refill to refill. Should be used in soft water areas only (calcium hardness < 150 ppm). For hard water areas, use pH Balance Plus.

Useful Tips:

Use this product each time you refill your spa with water
Compatible with chlorine, bromine, ozone and mineral purification systems
Size: 32 fl. oz.