HTH 67059 Calcium Up, 4 lb Bottle, Granular PACK OF: 1

Raise the calcium hardness of your swimming pool water to protect your pool surfaces and equipment from harm.

Features

• Protects pool surfaces
• Helps chlorine to work efficiently
• Prevents equipment damage
• Compatible with all swimming pools
• Helps prevent swimming pool water from becoming corrosive
• For excellent results, use HTH® 6-way test strips weekly to test, balance and maintain calcium hardness levels between 200 and 500 ppm
• Protects pool liners, metal and plastic surfaces as well as equipment from damage

Specifications