HTH Pool Care Calcium Hardness Increaser — Granules, 4 lb — Pool Chemical to Raise Calcium Hardness and Improve Water Balance

HTH Pool Care Calcium Hardness Up, Protects Swimming Pool Surfaces and Liners, 4 lbs <p> Low calcium hardness can cause swimming pool water to be corrosive, resulting in damage to pool surfaces, vinyl linings and equipment. Use HTH® Pool Care Calcium Hardness Up to raise the calcium hardness levels in your water and prevent corrosion of your pool surfaces, including metal and plastic. HTH® Pool Care Calcium Hardness Up is great for all pool types, including vinyl-lined pools and salt water systems. </p><p> How to Use HTH® Calcium Hardness Up 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 Hardness Up to raise calcium hardness level.</p>

• Protects pool surfaces 
• Helps chlorine to work efficiently
• Prevents equipment damage
• Compatible with all swimming pools
  
   

About HTH® Pool Care
HTH® was developed with the pool owner in mind. We know that maintaining your pool water can be a lot of work. That’s why we're here every step of the way, helping you clear the uncertainty from pool care. With economical, easy-to-use solutions, HTH® is designed to work hard so you're prepared to tackle whatever life throws in your pool. From balancing your water to treating green water, we offer a full line of products to keep your pool water healthy and your swimmers happy.
 

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

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.