Sometimes water's pH is affected by debris, tap water or well water. High or low pH can have a harmful effect on fish, that's why we developed our pH Increaser and pH Decreaser.

pH Increaser 16 oz.
Item #30102
16 oz. treats up to 1000 gallons

pH Decreaser 16 oz.
Item #30104
16 oz. treats up to 1000 gallons