3 Facts About Lowering Pool pH Without Chemicals

Aeration raises pH, not lowers it Running pumps longer or adding fountains offgasses CO₂, which drives pH up and makes high pH worse.

Rain is too inconsistent to rely on Rainwater can vary in pH and volume, and it won’t reliably or quickly correct a high pH pool.

The only reliable method is adding acid Muriatic acid or sodium bisulfate are the proven ways to lower pH. High pH causes scaling, cloudy water, and makes chlorine ineffective.