HTH Granule Calcium Hardness Increaser 4 lb

Available for in-store pickup only

Due to shipping restrictions, this product can only be picked up in-store.

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Product Features

Low calcium hardness in your pool can cause pool water to be corrosive, resulting in damage to pool surfaces and equipment. Test your water weekly to make sure your calcium hardness levels are between 200 and 500 ppm. If it's below 200 ppm, add HTH Calcium Hardness Up to raise calcium hardness levels and prevent corrosion of metal and plaster surfaces. HTH Calcium Hardness Up is great for all pool types including vinyl-lined pools and saltwater systems.
Compatible with all swimming pools
Protects pool surfaces
Helps chlorine to work efficiently
Prevents equipment damage
Protects pool liners, metal and plastic surfaces as well as equipment from damage
Protects & prevents corrosion