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GLB Calcium Hardness Up Overview GLB Calcium Hardness Up increases water hardness to prevent foaming, equipment corrosion, and scaling. Keeping your pool water balanced is an important step in getting the most out of and preserving the life of pool equipment. This product is easy to apply, just pour it directly into the pool. This product is compatible with chlorine, bromine, ozone, salt water pools, and biguanide sanitizers. What’s in the Box 1 x GLB Calcium Hardness Up Ingredients Calcium Chloride: 94% Other Ingredients: 6% Directions Initial Treatment: 1 lb. per 10,000 gallons of water. pH should be maintained between 7.2 - 7.8 Compatibility Compatible with chlorine, bromine, salt water Chlorine, ozone, biguanide and mineral sanitizing systems. Brand GLB®
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🇺🇸 Ship from USA · On Agora since 2026
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