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Calcium Hardness Increaser is used to raise calcium levels in your pool or spa. When the levels are too low, it can corrode equipment and cause stains.

Calcium Hardness Increaser - 5 Lbs. - Limited Quantities Available
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Calcium Hardness Increaser - 10 Lbs.
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Calcium Hardness Increaser - 6 Lbs. (Case of 4)
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Calcium Hardness Increaser - 25 Lbs.
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Calcium Hardness Increaser - 50 Lb. Bag
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