Salt for 25,000 gallons
| Salt level | Pounds | 40 lb bags | Kilograms |
|---|---|---|---|
| 0 → 3,200 ppm | 672 lb | 16.8 | 305 kg |
| 2,000 → 3,200 ppm | 252 lb | 6.3 | 114 kg |
| 2,500 → 3,200 ppm | 147 lb | 3.7 | 67 kg |
| 2,800 → 3,200 ppm | 84 lb | 2.1 | 38 kg |
| 3,000 → 3,200 ppm | 42 lb | 1 | 19 kg |
How much salt for a 25,000 gallon pool
A 25,000 gallon pool needs 672 lb (305 kg) of pool salt to go from fresh water to 3,200 ppm, about 16.8 bags of 40 lb. Each 1,000 ppm takes 210 lb. Check your salt cell’s manual: most want 2,700 to 3,400 ppm.
Run it with your numbers
Add
672lb
of Pool salt (sodium chloride 99%)
10,747 oz305 kg
Raises salt from 0 ppm to 3,200 ppm in 25,000 gal. That is about 16.8 bags of 40 lb.
- Brush the salt around until it dissolves, and keep the salt cell off for 24 hours.
- If you are unsure of your volume, add about 80% first, circulate for 24 hours and retest.
Check the product label. Strengths vary by brand, so enter the % printed on yours. Add one chemical at a time, into the water, and never mix chemicals.
Save this test and get reminded when it is time to retest.
Pool Calc for iPhoneComing soon to the App StoreAbout salt
Use plain pool salt, at least 99% sodium chloride, with no anti-caking agents or iodine. Pour it in the shallow end, brush it around until it dissolves, and keep the salt cell off for 24 hours so undissolved salt doesn’t reach it.
Too much salt only comes down by replacing water, so add about 80% first if you are unsure of your volume, wait a day and retest with a salt test or your cell’s reading.
Dosing a 25,000 gallon pool
That is about the size of an 18 × 36 ft in-ground pool averaging 5 ft deep (about 24,240 gal). In a 25,000 gallon pool doses run to gallons and bags, so pour or broadcast them while walking along the deep end or in front of several returns rather than in one spot. Larger pools take longer to mix: give the pump at least an hour before you retest.
Questions
How much salt do I need for a 25,000 gallon pool?
From fresh water to 3,200 ppm: 672 lb, about 16.8 bags of 40 lb.
How long until I can turn the salt cell on?
Brush the salt until it dissolves and wait about 24 hours with the pump running before turning the cell back on.
Can I swim after adding salt?
Yes, once it has dissolved. Salt at pool levels is far below sea water.