Aquarius Spa pH Minus, Reduces pH & Alkalinity in Water, 700-g

This bottle of Aquarius Spa PH Minus reduces pH and alkalinity in water, protecting the vital equipment in your spa. Use as needed to maintain optimal balance for a soothing soak that won't damage your spa. No need for the hassle of replacing pipes and jets - keep pH low the easy way with this sodium bisulfate powder. Simply add this alkaline reducer to your spa to reach an optimal water balance.