Puri Tech Calcium Hardness Increaser Plus, 5lb.

* Increases calcium hardness to prevent corrosion, staining, and equipment damage caused by low calcium levels in pools and spas.

*Specially formulated to dissolve quickly and evenly in water, providing fast, efficient treatment with minimal wait time.

*Helps maintain calcium hardness in the recommended 200–400 ppm range, reducing cloudy water, staining, and costly damage to pool surfaces and plumbing.

*Simply measure and add directly to the pool or spa. Use as needed based on current calcium levels and water volume for best results.

* Convenient 5 lb Size, comes in a manageable, easy-to-store bag perfect for smaller pools, spas, or regular maintenance of balanced water chemistry.