SpaGuard pH Decreaser - 1 Pound 6 Ounces
SpaGuard pH Decreaser lowers the pH level in spa water. This particularly pH Decreaser is a dry, granular product that is safer to handle and easier than an acidic liquid equivalent. Ideally, the pH level in hot tub water should fall between 7.2 and 7.6 as measured by a test kit or strips.
Sodium bisulfate – 93.2%
Other – 6.8