Calcium Hardness Increaser - 50 Lb. Bag filter-internal-diameter_4 1/16 inches 5 inch vacuum head or

5 inch vacuum head or spot cleaning when the vacuum head is detached

This is a Lasco Insert Coupling

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

it is too alkaline and causes scaling

Calcium Hardness Increaser - 50 Lb. Bag filter-internal-diameter_4 1/16 inches 5 inch vacuum head orThis 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