Swimming Pool Care: Calcium Hardness Up Chemical for Surfaces and Liners (4 Lbs)
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About this item
BENEFITS: Raise the calcium hardness of your swimming pool water to protect your pool surfaces and equipment from harm
COMPATIBILITY: Pool care chemical works with all swimming pools
RAISES CALCIUM HARDNESS LEVELS: Helps prevent swimming pool water from becoming corrosive
PROTECTS & PREVENTS CORROSION: Protects pool liners, metal, and plastic surfaces as well as equipment from damage
YOU'RE ALL CLEAR WITH HTH: For best results, use HTH 6-Way Test Strips weekly to test, balance and maintain calcium hardness levels between 200 and 500 ppm