Accu Chem Calcium Hardness Control 25lbs

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Accu Chem Calcium Hardness Control 25lbs bucket

This product increases the calcium hardness of your swimming pool water. Use Calcium Hardness treatment to increase low pool water hardness. Low hardness can cause staining, discoloration, foaming, and other problems.

It is important that the total alkalinity and total hardness of the pool water are measured periodically. The ideal range for calcium hardness is between 100 and 300 ppm. Total alkalinity should measure between 80 and 120 ppm. Deviation from the recommended ranges can cause the pool water to be either corrosive or scale forming.

Active Ingredient

Calcium Chloride


  • 5
    Best deal I could find.

    Posted by Jack Jennings on Mar 18 2021

    I like doing business with E Z Test pools because They have the products you receive them quit.

  • 5
    I buy from E Z Test Pools because the same products are cheaper and service is good.

    Posted by Jack Jennings on Feb 21 2020

    I have never had a problem with anything I bought and I have saved a lot of money. Thanks E Z Test Pools. Jack Jennings

  • 5
    calcium for pool.

    Posted by Jack Jennings on Jan 23 2019

    Got a good buy on this product. receive it in about 3 working days. It's good doing business with a company that is that good at getting product shipped that