pH Up for Spas Granular formula raises the pH of spa water. Features: Effective water balance control Easy to use Applications: To Raise pH Level: When the pH value of the water drops below 7.2, add the following amounts of pH UP while the pump is in operation for each 500 gallons of water. When the pH is between 6.8 and 7.2, add 2 tbs. of pH UP. When the pH is below 6.8, add 4 tbs. of pH UP. Allow 4 to 6 hours for circulation, then retest. Repeat above procedures if pH remains low. Compatible With: Chlorine, bromine, ozone, biguanide and mineral sanitizing systems
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