pH is normally maintained in the range 7.2 to 7.6 and Alkalinity in the range 80 to 120 ppm for chlorine and bromine sanitized systems or 50 to 90 ppm for the PristineBlue sanitation system.

If the Alkalinity and or pH of your pool water is above the required range enter pool water volume in the boxes below and click calculate to see how much TA pH Reducer (Sodium Bisulphate) to dose.