How do I calculate how much Cyanuric Acid is required?
Firstly you need to know your pool volume in cubic metres (m3). You also need to know the amount of Cyanuric Acid you wish to dose per m3. If you were starting with fresh water then a level of between 25 to 50 grams per m3 (g/m3) would be appropriate. If you already have a residual of Cyanuric Acid in your pool water you need to test this level using an appropriate test kit. NZS5826, 2000 indicates both the frequencies of testing and target levels for Cyanuric Acid. Once you have a test result, subtract his result from the target level you have selected, use the following formula. Multiply the pool volume (m3) by the amount of Cyanuric Acid required (g/m3). This will give an answer in grams so divide this by 1000 to convert it to kilograms.
