Cyanuric acid dose by pool volume

How much stabiliser takes an unstabilised pool to 40 ppm, at every common pool volume. Open a volume for the full 10 to 50 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	Stabiliser from 0 to 40 ppm
5,000 litres	200 g
7,000 litres	280 g
10,000 litres	400 g
15,000 litres	600 g
20,000 litres	800 g
25,000 litres	1,000 g
28,000 litres	1.12 kg
30,000 litres	1.2 kg
35,000 litres	1.4 kg
40,000 litres	1.6 kg
45,000 litres	1.8 kg
50,000 litres	2 kg
60,000 litres	2.4 kg
70,000 litres	2.8 kg
80,000 litres	3.2 kg

Stabiliser only goes one way

Stabiliser is the one reading that only goes up. Nothing consumes it, so the only way down is replacing water. It also raises the free chlorine you have to hold: Trouble Free Pool puts the minimum at 7.5% of the cyanuric acid reading. That trade is why the Hayward and Pentair manuals call for 30 to 50 ppm, salt pools included, rather than more being better.

More dosing tables