Pool Care Calcium Up, 4 Lbs

Low calcium hardness can cause swimming pool water to be corrosive, resulting in damage to pool surfaces, vinyl linings and equipment. Use HTH™ Calcium Up to raise the calcium hardness levels in your water and prevent corrosion of your pool surfaces, including metal and plastic. HTH™ Calcium Up is great for all pool types, including vinyl-lined pools and salt water systems.Use HTH™ 6-Way Test Strips or Test Kit to test your water weekly and make sure the calcium hardness level is between 200 and 500 ppm. If it falls below 200 ppm, add HTH™ Calcium Up to raise calcium hardness level.

• Raise the calcium hardness of your swimming pool water to protect your pool surfaces and equipment from harm
• Protects pool surfaces
• Prevents equipment damage
• 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
• For best results, use HTH™ 6-Way Test Strips weekly to test, balance and maintain calcium hardness levels between 200 and 500 ppm