How much baking soda do you use to raise total alkalinity in a 20000 gallon pool?

To raise the total alkalinity in a 20,000 gallon pool, you can typically add 1.5 pounds of baking soda for every 10 parts per million (ppm) increase you desire. Calculate how many ppm you need to raise your alkalinity by, and then use this ratio to determine the amount of baking soda needed for your specific situation.