To Increase pH

Note: The information below assumes a total alkalinity between 60-120 ppm. If your total alkalinity is outside of the 60-120 ppm range, "fix" your T.A. first.

Amount of Soda Ash needed to raise pH to 7.4

Actual pH

10,000 gallons

25,000 gallons

50,000 gallons

6.6

1 1/2 lbs

3 3/4 lbs

7 1/2 lbs

6.8

1 1/4 lbs

3 lbs

6 lbs

7.0

1 lbs

2 1/4 lbs

4 3/4 lbs

7.2

3/4 lb

2 lbs

3 1/4 lbs

To Add: Fill a clean bucket with water. Carefully add soda ash. For best results, dilute soda ash as much as possible with water. Stir until dissolved with a clean rod. Pour solution down sides of pool. Close the pool for at least 15 minutes before allowing swimmers to re-enter.

Warning: Do not add more than 1 pound of soda ash per 10,000 gallons of water at a time as it may cause the pool to cloud ("milky" consistency). Also, if your alkalinity is over 120 ppm, the addition of soda ash may also cause your water to cloud.

To Lower pH

Amount of Muriatic Acid needed to lower pH to 7.6

Actual pH

10,000 gallons

25,000 gallons

50,000 gallons

8.4

1/4 gallon

3/4 gallon

1 1/2 gallon

8.2

3 1/2 cups

1/2 gallon

1 gallon

8.0

2 1/2 cups

1 1/2 quarts

3 quarts

7.8

1 1/3 cups

3 1/4 cups

1 1/2 quarts

To Add: Wear protective clothing including acid-resistant apron, chemical resistant gloves, approved breathing apparatus and eye protection. Fill a clean bucket with water. Add Muriatic Acid to water. Carefully pour down side of pool distributing solution over as large an area as possible. Close the pool for at least 30 minutes before allowing swimmers to re-enter.

Warning: Never mix acid with any other chemicals. If splashed in eye, immediately irrigate with water for at least 15 minutes with large amounts of water - Call 911. If splashed on skin, wash with large amounts of water for at least 30 seconds.

1 quart = 32 ounces
1 cup = 8 ounces