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GLB Calcium Hardness Up

GLB Calcium Hardness Up


GLB Calcium Hardness Up

SKU: 71243A

Low stock

GLB Calcium Hardness Up


GLB Calcium Hardness Up increases water hardness to prevent foaming, equipment corrosion, and scaling. Keeping your pool water balanced is an important step in getting the most out of and preserving the life of pool equipment. This product is easy to apply, just pour it directly into the pool. This product is compatible with chlorine, bromine, ozone, salt water pools, and biguanide sanitizers.

Whatโ€™s in the Box

  • 1 x GLB Calcium Hardness Up


  • Calcium Chloride:ย 94%
  • Other Ingredients:ย 6%


    Initial Treatment:

    • 1 lb. per 10,000 gallons of water.
    • pH should be maintained between 7.2 - 7.8


      • Compatible with chlorine, bromine, salt water Chlorine, ozone, biguanide and mineral sanitizing systems.



        Most products purchased from our online shop within the last 30 days can be returned.

        The following items are non-returnable:

        • Gift cards
        • Electronics
        • Pumps / Motors
        • Hot Tubs
        • Closeouts
        • See return policy below for made-to-order/special-order return eligibility.