Puri Tech Powder Calcium Hardness Increaser 40 lbs Calcium Chloride for Sizewimming Pools

Puri Tech Swimming Pool Granular Calcium CAL Hardness Increaser Plus 40lbs - 2 bags of 20lb  BRAND NEW PACKAGING! Puri Tech Chemicals now come in a resealable bag for your convenience. Raises calcium level in swimming pool water.Calcium Hardness level prevents foaming, equipment and surface erosion and scaling. Dosage: 2,000 Gallons: 1.5 Lbs to increase hardness 50ppm, 3 Lbs/100ppm, 6.25 Lbs/200ppm 5,000 Gallons: 3 Lbs to increase hardness 50ppm, 6.25 Lbs/100ppm, 12.5 Lbs/200ppm 10,000 Gallons: 6.25 Lbs to increase hardness 50ppm, 12.5 Lbs/100ppm, 25 Lbs/200ppm 20,000 Gallons: 10.5 Lbs to increase hardness 50ppm, 25 Lbs/100ppm, 50 Lbs/200ppm Active Ingredients: Calcium Chloride Due to product variety and changes, the picture shown of the product may not represent the actual product packaging.