Calcium Hardness Increaser

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Proper calcium hardness levels help prevent corrosion of equipment and etching of spa surfaces. ​ Use Calcium Hardness Increaser to raise calcium hardness to the proper level. ​ For areas with high calcium in the source water, use Stain & Scale Control to prevent formation of scale.

  • Increases calcium hardness level in spa water
  • Helps prevent corrosion of spa equipment and surfaces