In The Swim Calcium Hardness Increaser for Swimming Pools – Fast-Acting, Scale Prevention – 94% Calcium Chloride – 25 Pounds

Price: $61.99 - $56.99
(as of Mar 06, 2024 23:42:12 UTC – Details)

From the brand

In The Swim was founded in 1982 by a husband and wife team. Shipping chlorine from the back of their garage and taking orders on their front porch, they began to have a vision that this could be something big.

40 years later, In The Swim remains one of the country’s largest online retailers for pool chemicals, supplies and equipment. Thanks for shopping with us!

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Quickly raises the calcium levels in your pool to prevent low calcium levels that can cause erosion, pitting, and etching of pool surfaces.
Prevents damage caused by excess amount of calcium hardness increaser can cause scaling and blockage of water flow in and out of the pool, which can damage your pool equipment.
Improved water quality improve the overall quality of your pool water by maintaining the proper calcium hardness level.
The recommended range for calcium in your water is around 180-220 ppm. Keep the ppm below 400.
Add approximately 6 pounds per 10,000 gallons of water to raise hardness level about 50 ppm. Use when your hardness level drops below 150 ppm.