Calcium Hardness Increaser - 4 Lbs. pool-dimensions_18x45 Climate Shield will extend the

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Calcium Hardness Increaser - 4 Lbs. pool-dimensions_18x45 Climate Shield will extend theThis is a 4 pound container of calcium hardness increaser which will raise the total the calcium hardness in your swimming pool water. This calcium di 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 Di Chloride. Directions for Adding Harness Increaser to Your Swimming Pool: If calcium levels are low, add this product