Use and Care Guide
CHLORINE DOSAGE CHART
pH DOSAGE CHARTS
ALKALINITY DOSAGE CHARTS
CHLORINE
If you choose to use chlorine as a disinfectant and sanitizer, learn to use it
ECONOMICALLY and EFFECTIVELY.
Effective use is largely dependent on pH. At a high pH (>7.8), chlorine’s ability
to disinfect is significantly reduced. But at a lower pH (7.2 to 7.8), chlorine’s
disinfecting ability is enhanced. Therefore, at lower pH levels, you get more
disinfection for your money.
Remember:
• Keep the pH at 7.8 or below.
• Keep CHLORINE between 2.0 and 4.0 ppm (spas higher).
• Periodically superchlorinate to eliminate COMBINED CHLORINE. (Breakpoint
dosage equals 10 times the amount of combined chlorine.)
• Chlorine-free shocks may be used as an alternative to superchlorination to
eliminate bather wastes and other organic contaminants.
*Chlorine products contain different amounts of available chlorine. Adjust treatment amounts
accordingly.
pH
To LOWER pH to desired value, add either dry acid (sodium bisulfate) or
muriatic acid according to chart.
To RAISE pH to desired value, add soda ash (sodium carbonate) according
to chart.
Note:
An adjustment in pH can change total alkalinity. Recheck total alkalinity
after pH adjustments.
*Sodium bisulfate percentage may vary. Adjust treatment amounts accordingly.
ALKALINITY
Charts are based on a decrease / increase of 10 ppm. To effect a 20 ppm
change, multiply dosage by 2; for 30 ppm, by 3; etc.
To LOWER total alkalinity, add either dry acid (sodium bisulfate) or muriatic
acid according to chart.
To RAISE total alkalinity, add baking soda (sodium bicarbonate) according
to chart.
Note:
An adjustment in total alkalinity can change pH. Recheck pH after total
alkalinity adjustments.
*Sodium bisulfate percentage may vary. Adjust treatment amounts accordingly.
TO LOWER pH
USING DRY ACID
(SODIUM BISULFATE, 93.2%)*
Drops of Acid Demand Reagent
0.31 oz /
9.25 g
0.49 oz /
13.9 g
1.23 oz /
36.9 g
6.16 oz /
185 g
1.16 lb /
554 g
1.54 lb /
738 g
1
12.3 oz /
369 g
0.99 oz /
27.7 g
2.46 oz /
73.8 g
12.3 oz /
369 g
0.62 oz /
18.5 g
2.31 lb /
1.11 kg
3.08 lb /
1.48 kg
2
1.54 lb /
738 g
0.93 oz /
27.7 g
1.48 oz /
41.6 g
3.70 oz /
111 g
1.16 lb /
554 g
3.48 lb /
1.66 kg
4.62 lb /
2.21 kg
3
2.31 lb /
1.11 kg
TO LOWER pH
USING MURIATIC ACID
(20˚ BAUMÉ/31.45% HCl)
Drops of Acid Demand Reagent
TO RAISE pH
USING SODA ASH
(SODIUM CARBONATE, 100%)
0.23 fl oz /
7.15 mL
0.37 fl oz /
10.7 mL
0.92 fl oz /
28.6 mL
4.58 fl oz /
143 mL
13.7 fl oz /
430 mL
1.15 pt /
573 mL
9.16 fl oz /
286 mL
1
0.46 fl oz /
14.3 mL
0.73 fl oz /
21.5 mL
1.83 fl oz /
57.3 mL
9.16 fl oz /
286 mL
1.72 pt /
859 mL
1.15 qt /
1.15 L
1.15 pt /
573 mL
2
0.69 fl oz /
21.5 mL
1.10 fl oz /
32.3 mL
2.75 fl oz /
85.9 mL
13.7 fl oz /
430 mL
1.28 qt /
1.29 L
1.72 qt /
1.72 L
1.72 pt /
859 mL
3
Drops of Base Demand Reagent
0.13 oz /
3.84 g
0.21 oz /
5.76 g
0.51 oz /
15.4 g
2.56 oz /
76.8 g
7.69 oz /
230 g
10.3 oz /
307 g
5.13 oz /
154 g
1
0.26 oz /
7.70 g
0.41 oz /
11.6 g
1.03 oz /
30.7 g
5.13 oz /
154 g
15.4 oz /
461 g
1.28 lb /
614 g
10.3 oz /
307 g
2
0.38 oz /
11.5 g
0.62 oz /
17.3 g
1.54 oz /
46.1 g
7.69 oz /
230 g
1.44 lb /
690 g
1.92 lb /
922 g
15.4 oz /
461 g
3
250 gal / 1,000 L
400 gal / 1,500 L
1,000 gal / 4,000 L
5,000 gal / 20,000 L
Volume
of Water
(gallons / liters)
15,000 gal / 60,000 L
20,000 gal / 80,000 L
10,000 gal / 40,000 L
0.51 fl oz / 15.0 mL
1.28 fl oz / 40.0 mL
6.40 fl oz / 200 mL
0.32 fl oz / 10.0 mL
1.20 pt / 600 mL
1.60 pt / 800 mL
10%
12.8 fl oz / 400 mL
0.07 oz / 2.22 g
0.12 oz / 3.33 g
0.30 oz / 8.89 g
1.48 oz / 44.4 g
4.44 oz / 133 g
5.94 oz / 178 g
45%
2.97 oz / 88.9 g
0.27 fl oz / 8.35 mL
0.43 fl oz / 12.5 mL
1.07 fl oz / 33.3 mL
5.33 fl oz / 167 mL
1.00 pt / 500 mL
1.33 pt / 667 mL
12%
10.7 fl oz / 333 mL
0.06 oz / 1.67 g
0.09 oz / 2.50 g
0.22 oz / 6.67 g
1.11 oz / 33.3 g
3.34 oz / 100 g
4.45 oz / 133 g
2.23 oz / 66.7 g
60%
0.05 oz / 1.54 g
0.08 oz / 2.31 g
0.21 oz / 6.15 g
1.03 oz / 30.8 g
3.08 oz / 92.3 g
4.11 oz / 123 g
2.05 oz / 61.5 g
65%
0.04 oz / 1.42 g
0.07 oz / 2.13 g
0.20 oz / 5.63 g
0.95 oz / 28.3 g
2.66 oz / 84.5 g
3.77 oz / 113 g
1.77 oz / 56.3 g
75%
TO RAISE CHLORINE 1 PPM
USING CHLORINE COMPOUND*
% Available Chlorine
250 gal / 1,000 L
400 gal / 1,500 L
1,000 gal / 4,000 L
5,000 gal / 20,000 L
Volume
of Water
(gallons / liters)
15,000 gal / 60,000 L
20,000 gal / 80,000 L
10,000 gal / 40,000 L
250 gal / 1,000 L
400 gal / 1,500 L
1,000 gal / 4,000 L
5,000 gal / 20,000 L
Volume
of Water
(gallons / liters)
15,000 gal / 60,000 L
20,000 gal / 80,000 L
10,000 gal / 40,000 L
TO LOWER ALKALINITY
USING DRY ACID
(SODIUM BISULFATE, 93.2%)*
TO LOWER ALKALINITY
USING MURIATIC ACID
(20˚ BAUMÉ/31.45% HCl)
TO RAISE ALKALINITY
USING BAKING SODA
(SODIUM BICARBONATE, 100%)
1.37 oz / 38.6 g
3.44 oz / 103 g
1.07 lb / 515 g
0.64 fl oz / 20.0 mL
1.02 fl oz / 29.9 mL
2.56 fl oz / 79.9 mL
12.8 fl oz / 399 mL
3.21 lb / 1.55 kg
4.30 lb / 2.06 kg
1.20 qt / 1.20 L
1.60 qt / 1.60 L
2.15 lb / 1.03 kg 1.60 pt / 799 mL
0.56 oz / 16.8 g
0.90 oz / 25.2 g
2.24 oz / 67.1 g
11.2 oz / 336 g
2.10 lb / 1.01 kg
2.80 lb / 1.34 kg
1.40 lb / 671 g
0.86 oz / 25.8 g
Desired Change in ppm = 10 ppm Desired Change in ppm = 10 ppmDesired Change in ppm = 10 ppm