Spa Pure Hardness Increaser 1 lb


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Product Number: C002729-CS20B6
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Spa Pure Hardness Increaser 1 lb

Spa Pure Hardness Increaser, or calcium hardness increaser, is used to raise the total calcium hardness level in your spa. Low calcium hardness is corrosive to the heater, spa surface, and can also contribute to excessive foaming in the water. High calcium hardness causes scale buildup and cloudy water. In your spa, high water temperatures make it difficult for calcium to stay in solution, so it's recommended to use a Stain & Scale Preventer on a weekly basis to prevent scale buildup.

Spa Pure Hardness Increaser Features:
  • Reduces risk of corrosion of metal, pumps motors, and heaters
  • Dissolves quickly in spa water
  • Active Ingredient: 100% Granular Calcium Chloride
Spa Pure Hardness Increaser Dosage:
If your water testing kit indicates that the calcium hardness is too low, use 1 oz of Hardness Increaser per 500 gallons of water to raise the hardness level by 10 ppm.

Note: When comparing Spa Pure dosage amounts to other chemical brands you will find that Spa Pure Calcium Hardness Increaser offers the BEST VALUE for your money.