Durachlor Hardness Increaser 25lb

Hardness Increaser

Dry granular product for raising calcium hardness.

Product Details


  • Increases calcium hardness levels
  • Pure flakes minimize clouding in pool water


  • Prevents long term damage to vital pool components
  • Easy application


  • Ideal calcium hardness levels should be maintained between 200-400 ppm
  • Avoid increasing hardness more than 50 ppm every couple hours
  • Easy to use chart on packaging

Available Sizes

4 lb pail
10 lb pail
25 lb pail
25 lb box
50 lb pail

Product Downloads

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