Spa Choice Reduce PH for Spas and Hot Tubs, 1.5 Pounds, 4-Pack

Reduces pH level of spa or hot tub to 7.2 - 7.8 ppm Compatibility with all sanitzers, including biguanide, bromine and chlorine, letting you keep your sanitation solution intact Single pack includes four bottles of product for extended useYou may also like Spa Choice Clear & Sparkle - 12 Quarts.