Puri Tech Calcium Hardness Increaser Plus, 25lb.

*Raises hardness to prevent corrosion, scaling, and surface damage. Ideal for all pool types, including saltwater and chlorine systems, to keep water balanced and equipment protected.

*Made with high-quality ingredients that dissolve quickly and evenly, ensuring efficient treatment and minimizing wait time before swimming.

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

*Ideal for larger Pools, the 25 lb bag offers ample supply for multiple treatments, making it perfect for larger residential or commercial pools and spas.

*Easy Storage & Application – Comes in a durable, resealable bag for clean storage. Simply broadcast over deep end and run the pump for at least 4 hours for optimal results.