Baking soda dose by pool volume

How much sodium bicarbonate raises total alkalinity by 30 ppm, at every common pool volume. Open a volume for the full 10 to 100 ppm table.

Every dose below is worked out for that exact volume. If yours is not on the list, the calculator takes any number.

Pool volume	Baking soda for +30 ppm alkalinity
5,000 litres	252 g
7,000 litres	353 g
10,000 litres	504 g
15,000 litres	756 g
20,000 litres	1.01 kg
25,000 litres	1.26 kg
28,000 litres	1.41 kg
30,000 litres	1.51 kg
35,000 litres	1.76 kg
40,000 litres	2.02 kg
45,000 litres	2.27 kg
50,000 litres	2.52 kg
60,000 litres	3.02 kg
70,000 litres	3.53 kg
80,000 litres	4.03 kg

Fix alkalinity before you chase pH

Alkalinity is the buffer that stops pH swinging, so it is worth fixing before you chase a pH reading. Baking soda raises it and nudges pH up slightly on the way. If both readings are low, raise alkalinity first and test again: pH often comes up on its own.

More dosing tables