Natural Chemistry

Natural Chemistry Spa Alkalinity Increaser 2.71Ib.

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  • Regular price $18.99
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Natural Chemistry’s Spa Alkalinity Increaser​ is used to raise total alkalinity in spa water. Total alkalinity in spa water should be maintained between 80-120 ppm. As a result of the buffering effect of total alkalinity, pH, bather comfort, water balance, and clarity are more easily maintained.


  1. Test spa water for total alkalinity level.
  2. Compare test results to the chart below to determine the appropriate amount of product necessary to adjust.
  3. With the spa circulating pump at high speed, add the required amount directly into the spa water. Continue circulating water for a minimum of 20 minutes.

 Spa Volume      20ppm      40ppm      80ppm      100ppm

200gal               1oz            2oz           4oz             5oz

400gal               2oz            4oz           8oz             10oz

800gal               4oz            8oz           16oz           5oz