DIRECTIONS FOR USE:

Measure pH and total alkalinity of pool water with suitable test kit. NOTE: Total Alkalinity should be adjusted first, then adjust pH.
From the chart below, determine the quantity of Alkalinity Increaser required based on results of measured values in step 1. above. As a general rule, 1.5 pounds of Alkalinity Increaser per 10,000 gallons of pool water will raise the alkalinity by 10 ppm.
Add proper quantity of Alkalinity Increaser directly to the pool water. Make certain circulation equipment (filter pump) is operating. Allow the water to recirculate for two to three hours and re-test for pH and total alkalinity. Repeat steps 1 and 2 until total alkalinity is in the recommended range (100 – 150 ppm for plaster pools and 125 – 150 ppm for vinyl, fiberglass, and painted pools. Do not add more than 4 lbs. of Alkalinity Increaser per 10,000 gallons at any one time. In the event pH has been increased above 7.6, use First Choice pH Minus to adjust pH downward to the proper level. Do this only after the total alkalinity level has been adjusted to the proper range.