The 2 lbs pH Up Pouch is a specialized pool chemical designed to effectively raise the pH level of your pool water. Each pouch contains 2 lbs of pH increaser to create a balanced and safe swimming environment. Maintaining pH levels between 7.2 and 7.6 ensures optimal sanitizer effectiveness, enhances swimmer comfort, and prevents issues such as corrosion, staining, and irritation. Comes in a set of 4 pouches.