Calcium Hardness Increaser - 50 Lb. Bag filter-internal-diameter_4 1/16 inches This Virginia and West Virginia

This Virginia and West Virginia Warning No Lifeguard On Duty (14 Years And Under) aluminum sign measures 24 x 18 inches

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This Stenner chemical pump #85MJL1A4STAA provides reliable chemical feeding for your swimming pool

The Aquabot Magnum pool cleaner with PVA brushes is designed for pools up to 80 feet in length and features the AquaSmart System

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Calcium Hardness Increaser - 50 Lb. Bag filter-internal-diameter_4 1/16 inches This Virginia and West VirginiaThis 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