Swimming Pool & Spa Chart

Gallonage Chart

Gallonage Chart

Sugested NSPI Standards

MINIMUMIDEALMAXIMUM
Free Chlorine, ppm1.01.0-3.03.0
Combined Chlorine, ppmNoneNone0.2
Bromine, ppm2.02.0-4.04.0
pH7.27.4-7.67.8
Total Alkalinity, ppm6080-100 for Liquid Chlorine, Cal Hypo and Lithium Hypo
100-120 for Gas Chlorine, Dichlor, Trichlor and Bromine Compounds
180
TDS, ppm3001,000-2,0003,000
Calcium Hardness, ppm150200-4005,000-1,000+
Cyanuric Acid, ppm1030-50150 (except where limited by Health Dept. requirements often to 100 ppm)

Sugested NSPI Standards - Spas

MINIMUM IDEAL MAXIMUM
Free Chlorine, ppm 1.0 3.0-5.0 10.0
Combined Chlorine, ppm None None 0.2
Bromine, ppm 2.0 3.0-5.0 10.0
pH 7.2 7.4-7.6 7.8
Total Alkalinity, ppm 60 80-100 for Liquid Chlorine, Cal Hypo and Lithium Hypo
100-120 for Gas Chlorine, Dichlor, Trichlor and Bromine Compounds
180
TDS, ppm 300 1,000-2,000 3,000
Calcium Hardness, ppm 150 200-400 5,000-1,000+
Cyanuric Acid, ppm 10 30-50 150 (except where limited by Health Dept. requirements often to 100 ppm)

Superchlorination Chart

This chart tells you how much of various types of chlorine are needed to raise free available chlorine level by 10 ppm. Only chemicals used for super chlorination are included. Amounts are practical measurements, rounded off to nearest ¼.

GALLONS IN POOL
Type of Chlorine 1,000 5,000 10,000 15,000 20,000 25,000 50,000
Liquid 10 oz. 1-3/4 qts. 3-1/4 qts. 1-1/4 qts. 1-2/3 gal. 2 gal. 4 gal.
Lith Hypo 4 oz. 1-1/4 lbs. 2-1/3 lbs. 3-1/2 lbs. 4-3/4 lbs. 6 lbs. 12 lbs.
Dichlor 2-1/4 oz. 11 oz. 1-1/3 lbs. 2 lbs. 2-2/3 lbs. 3-1/3 lbs. 6-3/4 lbs.
Cal Hypo 2 oz. 10 oz. 1-1/4 lbs. 2 lbs. 2-1/2 lbs. 3-1/4 lbs. 6-1/2 lbs.
Gas 1-1/4 oz. 1-3/4 oz. 13-1/4 oz. 1-1/4 lbs. 1-2/3 lbs. 2 lbs. 4 lbs.

Chlorination Chart

This chart tells you amounts of various types of chlorine you must add to raise free available chlorine level by 1 ppm. Amounts are practical units of measurement that have rounded to the nearest 1/8. Test water addition to be sure.

GALLONS IN POOL
Type of Chlorine 1,000 5,000 10,000 15,000 20,000 25,000 50,000
Liquid 1 oz. 5-1/2 oz. 10-1/2 oz. ½ qt. 2/3 qt. ¾ qt. 1-2/3 qt.
Lith Hypo ½ oz. 2 oz. 4 oz. 6 oz. ½ lbs. 10 oz. 1-1/4 lbs.
Dichlor ¼ oz. 1 oz. 2-1/4 oz. 3-1/4 oz. 4-1/4 oz. 5-1/2 oz. 11 oz.
Cal Hypo ¼ oz. 1 oz. 2 oz. 3 oz. 4 oz. 5 oz. 10-1/4 oz.
Trichlor 1/8 oz. ¾ oz. 1-1/2 oz. 2-1/4 oz. 3 oz. 3-3/4 oz. 7-1/2 oz.
Gas 1/8 oz. 2/3 oz. 1-1/3 oz. 2 oz. 2-2/3 lbs. 3-1/3 oz. 6-2/3 oz.

Establishing or Increasing Cyanuric Acid Level

GALLONS IN POOL
Increase in CYA in ppm 1,000 5,000 10,000 15,000 20,000 25,000 50,000
1.0 1-1/4 oz. 6-1/2 oz. 12-3/4 oz. 1-1/4 lbs. 1-2/3 lbs. 2 lbs. 4 lbs.
2.0 2-1/2 oz. 12-3/4 oz. 1-3/4 lbs. 2-1/2 lbs. 3-1/3 lbs. 4 lbs. 8-1/3 lbs.
3.0 4 oz. 1-1/4 lbs. 2-1/2 lbs. 3-3/4 lbs. 5 lbs. 6-1/4 lbs. 12-1/2 lbs.
4.0 5-1/4 oz. 1-2/3 lbs. 3-1/3 lbs. 5 lbs. 6-2/3 lbs. 8-1/3 lbs. 6-2/3 lbs.
5.0 6-1/2 oz. 2 lbs. 5-1/4 oz. 6-1/4 lbs. 8-1/3 lbs. 10-1/2 lbs. 21 lbs.

Additional Resources

Pool Care Guide
Pool Care Guide
Troubleshooting Pool Guide
Pool Troubleshooting Guide
Pool and Spa Chemical Charts
Storing and Handling Pool Chemicals