User Manual

(when pH reading is 7.8 or above)

1. Use sample water from the pH test. Counting each

drop, add Solution #3 (swirling between drops)

until the color matches approximately the 7.4 color

standard. Do not count the drop which lowers the

pH to 7.2 or below.

2. Refer to Acid Demand Table on Page 12 for proper

amount of acid to be added based on the capacity of

your pool or spa.

3. If more than 1 pint of acid per 10,000 gallons is

required, add it in two or more doses. Allow about

1 hour between doses and do not add more than 2

quarts in one day. Test again in 24 hours. Additional

acid may be needed to maintain correct pH.

4. Add acid only when the filter is running and avoid

acid concentrations in any one place. Add slowly

to deep end of pool away from the vicinity of the

surface skimmer and 12 to 18 inches out from the

pool walls. Leave filter on for at least one hour.

5. If the first drop of Solution #3 lowers the pH to 7.2

or below, it is an indication that the total alkalinity is

too low (Test 4). Don’t add acid. Proceed to Test 4 to

determine your TOTAL ALKALINITY.

TEST 3: Acid Demand