(207) 469-6004 Verona Island, Maine

Spa Pure Alkalinity Increaser


Alkalinity helps keep your pH in the ideal range. Even if pH is in range, low or high alkalinity can create havoc in your spa. Alkalinity doesn’t change that often, so it only needs to be tested half as frequently as pH.


  • Helps maintain alkalinity in proper range of 125-150 ppm
  • Enhances swimmer comfort
  • Easy to use
  • Made in the USA


  • Apply to the spa while the water is circulating or as it is being filled
  • Use 1 ounce per 100 gallons of spa water to increase total alkalinity by 20 ppm
  • See your dealer for help in decreasing alkalinity in water

Available Sizes

  • 2 lb bottle

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