Baking soda alkalinity chart
How much sodium bicarbonate raises total alkalinity, by pool size and ppm, from 5,000 to 40,000 gallons.
| Gallons | Raise alkalinity by 10 ppm | Raise alkalinity by 20 ppm | Raise alkalinity by 30 ppm | Raise alkalinity by 40 ppm | Raise alkalinity by 60 ppm |
|---|---|---|---|---|---|
| 5,000 | 0.7 lb | 1.4 lb | 2.1 lb | 2.8 lb | 4.2 lb |
| 8,000 | 1.1 lb | 2.2 lb | 3.4 lb | 4.5 lb | 6.7 lb |
| 10,000 | 1.4 lb | 2.8 lb | 4.2 lb | 5.6 lb | 8.4 lb |
| 12,000 | 1.7 lb | 3.4 lb | 5.0 lb | 6.7 lb | 10.1 lb |
| 15,000 | 2.1 lb | 4.2 lb | 6.3 lb | 8.4 lb | 12.6 lb |
| 18,000 | 2.5 lb | 5.0 lb | 7.6 lb | 10.1 lb | 15.1 lb |
| 20,000 | 2.8 lb | 5.6 lb | 8.4 lb | 11.2 lb | 16.8 lb |
| 25,000 | 3.5 lb | 7.0 lb | 10.5 lb | 14.0 lb | 21.0 lb |
| 30,000 | 4.2 lb | 8.4 lb | 12.6 lb | 16.8 lb | 25.2 lb |
| 40,000 | 5.6 lb | 11.2 lb | 16.8 lb | 22.4 lb | 33.6 lb |
How to read it
About 1.4 lb of sodium bicarbonate raises alkalinity 10 ppm in 10,000 gallons.
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 Raising alkalinity with baking soda.