how to correct ph levels in swimming pool
Maintaining pH in the pool. 1  1. Maintain a proper pH level. 2  2. If pH is high, add a small amount of muriatic acid and retest the water after about 6 hours of continuous filtration, readjusting pH as needed. 3  3. If swimmers are having a problem with burning eyes,â high or low pH is probably to blame, not high chlorine.