Master Clear PH & Alkalinity Down – 1.5 lb. – Powder pH & Alkalinity decreaser
Master Clear PH Down is a powder that can be added directly to your spa’s water, or can be dissolved in water, to lower the pH & alkalinity levels in the spa. The primary component is sodium bisulfate. Ideal pH range is between 7.4 & 7.6, with a tolerance range of 7.2 & 7.8.