Hth Pool Care Ph Down 5 Lb. Ph Decreaser Granule

pH decreaser that helps balance pH levels in swimming pool water, improving both the quality of the water and the comfort of your swimmers. Not only ensures that your chlorine is working more efficiently, but it helps prevent scale formation on pool surfaces and equipment, as well as significantly reduces skin and eye irritation. Great for all pool types, including vinyl-lined pools and salt water systems.