Calcium Hardness Increaser - 50 Lb. Bag filter-width_12 1/2 inches This adjustable flow pump is

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Calcium Hardness Increaser - 50 Lb. Bag filter-width_12 1/2 inches This adjustable flow pump isThis is a 50 pound bag of calcium hardness increaser which will raise the total the calcium hardness in your swimming pool water. This calcium chloride product is in granular form. For most pools, calcium hardness levels should be maintained between 200 and 400 ppm. Active Ingredient of the Harness Increaser: 100% Calcium Chloride. Directions for Adding Harness Increaser to Your Swimming Pool: If calcium levels are low, add this product directly to