Spa Ph/Alkalinity Down 3lb.
St. Cyr brand PH/Alkalinity Decreaser 3lb. Container.
St. Cyr brand Ph and Alkalinity Decrease 3lb container. Having a Ph or Alkalinity that is too high in your hot tub water can cause cloudy water and make your chlorine sanitation ineffective. If your PH rises about 7.8 or Alkalinity goes beyond 150 ppm use St. Cyr’s Ph/Alkalinity Down to get your water back in range.
This product is a granular acid, so care should be taken when using. The ingredient is Sodium Bisulfate. Check label for dosing instructions.