Adjusting the potential hydrogen (pH) level in a swimming pool involves increasing the measurement of alkalinity or basicity. Pool water with a pH below the ideal range, typically 7.2 to 7.8, is considered acidic. Raising the pH prevents corrosion of pool equipment, irritation to swimmers’ skin and eyes, and ensures chlorine sanitizers function effectively. For example, if a pool test indicates a pH of 6.8, a pH increaser, such as sodium carbonate (soda ash), is required to elevate the pH to the recommended level.
Maintaining a balanced pH is essential for swimmer comfort and pool longevity. Acidic water can erode plaster, metal fittings, and other pool components, resulting in costly repairs. Proper pH also optimizes chlorine’s ability to disinfect, reducing algae growth and bacterial contamination. Historically, various methods and compounds have been employed to control pH, evolving from simple additives like lye to sophisticated chemical formulations. The focus has always remained on achieving a stable and safe aquatic environment.