PooloraPool alkalinity calculator
Calculate sodium bicarbonate needed to raise total alkalinity, using your pool volume, current reading, target and product purity.
Bicarbonate raises total alkalinity. Choose the target from the requirements for your pool surface and treatment system, then enter the purity of the sodium bicarbonate you own.
How the calculation works
Alkalinity is reported as CaCO₃. The app engine converts sodium bicarbonate using its molar mass and the equivalent weight of CaCO₃, then corrects for product purity. This is not a pH dose calculation.
Worked example
For 10,000 gallons and a 10 ppm increase, pure baking soda (sodium bicarbonate) takes about 1.4 lb (22 oz · 635 g). In metric, 10,000 L needs about 168 g. A less pure product requires more.
Before using the result
Only for sodium bicarbonate, not sodium carbonate (soda ash) or mixed pH increasers. This tool cannot lower alkalinity. Recheck pH and alkalinity after treatment.
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