PH Down is a highly effective pool water balancer designed to help lower the pH level of your pool water, ensuring optimal water chemistry. This product is compatible with various sanitizing systems, including chlorine, bromine, mineral purification, saltwater chlorine, and ozone systems. By maintaining the proper pH range of 7.2 to 7.8, it helps prevent staining, scaling, and clouding, promoting clear and clean pool water. The 10 lb container is ideal for larger pools, providing long-lasting results with easy application.