HTH 4 lbs. PODS Pre-Measured Water Soluble Pods Calcium Hardness Up Pool Balancer

HTH Calcium Hardness Up Pods make balancing your pool water easier than ever – just drop them into the skimmer or directly into the pool, the pod liner dissolves immediately. Low calcium hardness in your pool can cause pool water to be corrosive, resulting in damage to pool surfaces and equipment. Test your water weekly to make sure your calcium hardness levels are between 200 and 500 ppm. If it’s below 200 ppm, add HTH Calcium Hardness Up Pods to raise calcium hardness levels, and prevent corrosion of metal and plaster surfaces. HTH Calcium Hardness Up Pods are great for all pool types including vinyl-lined pools and salt water systems.Increases calcium hardness in swimming poolsPre-measured pods make pool care easier than ever – no measuring, no messReduces corrosiveness of water when calcium hardness is too lowHelps avoid damage to pool surfaces and equipmentHelps keep calcium hardness levels between 200 and 500 ppm