Pool chemistry is extremely important. According to the Center for Disease Control (CDC), the optimal pool pH is between 7.2 and 7.8. Pure water has a pH of 7. Lower levels, indicating an acidic state, may cause eye and skin irritation or corrosion to the system. Higher levels, indicating an alkaline state, could also cause irritations. While pool chemicals were created to easily balance pH, you may want to use other methods to lower pH in your pool.
Install a distilled water system in your home. Some areas have a naturally alkaline or "hard water" composition. Distilled water is almost pure and lacks the minerals and other substances that raise pH levels. Although a laborious process, you can drain your pool and fill with distilled water. Use the the pH test strips to gauge how much the distilled water has lowered the pH.
Alternatively, heat the pool. Liquids with higher temperatures have higher solubility ratings. This means that they can more readily dissolve naturally occurring substances such as calcium carbonate. This particular compound increases the acidity of the water, lowering the pH level. Use the test strips to track pH levels.
Change the pool water less frequently as another option. Compounds that decrease the pH of pool water, such as calcium carbonate, naturally build up over time. Allowing this buildup to occur will naturally lower the pH. Use the pH strips to determine when the water must be changed. Once the pH is below the recommended pH of 7.2, change the water.