Aqua Clear™ pH Increaser raises the pH level of your swimming pool. pH is one of the most important factors in keeping your pool water balanced. If your pH isn’t balanced, the water may be uncomfortable for swimmers and over time your pool equipment and liner may become damaged. When your test kit indicates that pH levels are low, add a pool pH product such as this pH Increaser per the dosage instructions on the label to fix the issue. This value pool balancer comes in a big size, giving you everything you need for multiple treatments.