Chemical Dosing Charts

Chemical Dosing Charts

Dosage Required to Chemically Treat 10,000 Gallons of Water

  • Parameters

  • To Increase pH

  • To Lower pH

  • Daily Test Log

Parameter - Chemical

Required Dosage

 

1 ppm            10 ppm

Free Chlorine

   

Calcium Hypochlorite (67%)

2 oz

1.3 lbs

Sodium Hypochlorite (12%)

10 fl oz

3.3 qts

Chlorine Gas

1.3 oz

13 oz

Neutralize Chlorine

   

Sodium Thiosulfate

 

1.6 lbs

Increase Total Alkalinity

   

Sodium Bicarbonate

 

1.4 lbs

Increase Calcium Hardness

   

Calcium Chloride 77%

 

1.2 lbs

Calcium Chloride 100%

 

0.9 lbs

Increase Stabilizer

   

Cyanuric Acid

 

13 oz

 

1 lb. = 16 ounces
1 gallon = 128 fluid ounces

Formula

Chemical to Add

 

=

Amount of Chemical

(given on table)

 

x

Amount of Desired Change

10 ppm

 

x

Pool Gallons

10,000

gallons

Example:
Raise alkalinity from 50 ppm to 100 ppm of alkalinity on 150,000 gallon pool (in pounds).

Chemical Added

=

1.4 lbs

x

(100 ppm - 50 ppm)

10 ppm

x

150,000 gallons

10,000 gallons

Chemical Added

=

1.4 lbs

x

50 ppm

10 ppm

x

150,000 gallons

10,000 gallons

=

105 lbs

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