In stock, ready to ship.

What it does:

HTH 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.

How much you need:

1lb per 1o,000 gallons of water will raise hardness level by 10 ppm.

How to add it:

Maintenance of the proper calcium hardness in pool water is an important part of maintaining overall water balance. Properly balanced water will prevent the formation of scale deposits and eliminate the corrosion of metal pipes and fixtures.

Using a suitable test kit, determine the calcium hardness level. In general, the calcium hardness level should be 150 ppm to 250 ppm. If the level is below 150 ppm, add HTH Calcium Hardness Up by distributing the product over the water surface. One pound of HTH Calcium Hardness Up will increase the calcium hardness 10 ppm per 10,000 gallons of water.

What it is:

Calcium Chloride: 94%, Other Ingredients: 6%


4 lbs.