Use to decrease pH

Use a Test Kit to establish the PH value of the pool water. If the reading is below 7.2, add this product at a rate of 500gms (18oz) per 45m (10,000 gallons) of pool water. for spas add at a rate of 25gm per 2.27m (500gls) Always pre-dissolve this product in warm water following the instructions on the label.