HTH 67059 Calcium Hardness Up - Protects Pool Surfaces & Liners | 4 Lbs Swimming Pool Chemical

• 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

The HTH Calcium Hardness Increaser is the ultimate solution to raise the calcium hardness of your swimming pool water and protect your pool surfaces and equipment from harm. It works with all swimming pools, helps prevent swimming pool water from becoming corrosive, and protects pool liners, metal, and plastic surfaces, as well as equipment from damage. For best results, use HTH 6-Way Test Strips weekly to test, balance, and maintain calcium hardness levels between 200 and 500 ppm. Trust HTH to keep your pool water balanced and crystal clear.