Worked answers
Common pool answers with the inputs shown.
These pages answer common gallon-size questions for salt, chlorine, shock, and pump flow. Each page shows the assumptions and links to the live calculator for custom readings.
salt
How much salt for a 10,000 gallon pool?
For a 10,000 gallon pool, raising salt from 2200 ppm to 3200 ppm takes about 83 lb of pool salt, or 3 40 lb bags.
salt
How much salt for a 15,000 gallon pool?
For a 15,000 gallon pool, raising salt from 2200 ppm to 3200 ppm takes about 125 lb of pool salt, or 4 40 lb bags.
salt
How much salt for a 20,000 gallon pool?
For a 20,000 gallon pool, raising salt from 2200 ppm to 3200 ppm takes about 167 lb of pool salt, or 5 40 lb bags.
salt
How much salt for a 25,000 gallon pool?
For a 25,000 gallon pool, raising salt from 2200 ppm to 3200 ppm takes about 209 lb of pool salt, or 6 40 lb bags.
salt
How much salt for a 30,000 gallon pool?
For a 30,000 gallon pool, raising salt from 2200 ppm to 3200 ppm takes about 250 lb of pool salt, or 7 40 lb bags.
chlorine
How much chlorine for a 10,000 gallon pool?
For a 10,000 gallon pool, raising free chlorine from 1 ppm to 4 ppm takes about 0.3 gal of 10% liquid chlorine.
chlorine
How much chlorine for a 15,000 gallon pool?
For a 15,000 gallon pool, raising free chlorine from 1 ppm to 4 ppm takes about 0.4 gal of 10% liquid chlorine.
chlorine
How much chlorine for a 20,000 gallon pool?
For a 20,000 gallon pool, raising free chlorine from 1 ppm to 4 ppm takes about 0.6 gal of 10% liquid chlorine.
chlorine
How much chlorine for a 25,000 gallon pool?
For a 25,000 gallon pool, raising free chlorine from 1 ppm to 4 ppm takes about 0.7 gal of 10% liquid chlorine.
chlorine
How much chlorine for a 30,000 gallon pool?
For a 30,000 gallon pool, raising free chlorine from 1 ppm to 4 ppm takes about 0.9 gal of 10% liquid chlorine.
shock
How much shock for a 10,000 gallon pool?
For a 10,000 gallon pool, raising free chlorine from 2 ppm to 12 ppm takes about 1.0 gal of 10% liquid chlorine.
shock
How much shock for a 15,000 gallon pool?
For a 15,000 gallon pool, raising free chlorine from 2 ppm to 12 ppm takes about 1.5 gal of 10% liquid chlorine.
shock
How much shock for a 20,000 gallon pool?
For a 20,000 gallon pool, raising free chlorine from 2 ppm to 12 ppm takes about 2.0 gal of 10% liquid chlorine.
shock
How much shock for a 25,000 gallon pool?
For a 25,000 gallon pool, raising free chlorine from 2 ppm to 12 ppm takes about 2.5 gal of 10% liquid chlorine.
shock
How much shock for a 30,000 gallon pool?
For a 30,000 gallon pool, raising free chlorine from 2 ppm to 12 ppm takes about 3.0 gal of 10% liquid chlorine.
pump
What size pump for a 10,000 gallon pool?
For a 10,000 gallon pool, an 8-hour turnover needs about 21 GPM before checking pump curves, filter limits, and plumbing resistance.
pump
What size pump for a 15,000 gallon pool?
For a 15,000 gallon pool, an 8-hour turnover needs about 31 GPM before checking pump curves, filter limits, and plumbing resistance.
pump
What size pump for a 20,000 gallon pool?
For a 20,000 gallon pool, an 8-hour turnover needs about 42 GPM before checking pump curves, filter limits, and plumbing resistance.
pump
What size pump for a 25,000 gallon pool?
For a 25,000 gallon pool, an 8-hour turnover needs about 52 GPM before checking pump curves, filter limits, and plumbing resistance.
pump
What size pump for a 30,000 gallon pool?
For a 30,000 gallon pool, an 8-hour turnover needs about 63 GPM before checking pump curves, filter limits, and plumbing resistance.