Liquid chlorine dose chart
How much 12.5% liquid chlorine to raise free chlorine, by pool size and ppm. Covers 5,000 to 40,000 gallons.
| Gallons | Raise free chlorine by 1 ppm | Raise free chlorine by 2 ppm | Raise free chlorine by 3 ppm | Raise free chlorine by 5 ppm | Raise free chlorine by 10 ppm |
|---|---|---|---|---|---|
| 5,000 | 5.1 fl oz | 10 fl oz | 15 fl oz | 26 fl oz | 51 fl oz (1.6 qt) |
| 8,000 | 8.2 fl oz | 16 fl oz | 24 fl oz | 41 fl oz (1.3 qt) | 82 fl oz (2.5 qt) |
| 10,000 | 10 fl oz | 20 fl oz | 31 fl oz | 51 fl oz (1.6 qt) | 102 fl oz (3.2 qt) |
| 12,000 | 12 fl oz | 24 fl oz | 37 fl oz (1.1 qt) | 61 fl oz (1.9 qt) | 122 fl oz (3.8 qt) |
| 15,000 | 15 fl oz | 31 fl oz | 46 fl oz (1.4 qt) | 76 fl oz (2.4 qt) | 1.20 gal |
| 18,000 | 18 fl oz | 37 fl oz (1.1 qt) | 55 fl oz (1.7 qt) | 92 fl oz (2.9 qt) | 1.43 gal |
| 20,000 | 20 fl oz | 41 fl oz (1.3 qt) | 61 fl oz (1.9 qt) | 102 fl oz (3.2 qt) | 1.59 gal |
| 25,000 | 25 fl oz | 51 fl oz (1.6 qt) | 76 fl oz (2.4 qt) | 128 fl oz (4.0 qt) | 1.99 gal |
| 30,000 | 31 fl oz | 61 fl oz (1.9 qt) | 92 fl oz (2.9 qt) | 1.20 gal | 2.39 gal |
| 40,000 | 41 fl oz (1.3 qt) | 82 fl oz (2.5 qt) | 122 fl oz (3.8 qt) | 1.59 gal | 3.19 gal |
How to read it
One ppm in 10,000 gallons takes about 10.2 fl oz of 12.5% liquid chlorine. Weaker product takes more, so check the jug.
These are estimates from commonly used dosing figures. Products vary, so follow the label and SDS, add chemical to water, never mix chemicals, and test again after circulating. Local code may set different ranges.
For an exact number on any pool, use the chlorine and acid and alkalinity calculators, or read Chlorine types compared.