Cyanuric Acid 20 Kg

Instructions in English, French, German, Thai. QR coded.

YOU ONLY NEED VERY SMALL QUANTITIES OF CYA. Are you sure you need it?  Most chlorine  sold for pools is already stabilised with CYA. Read our short article before you buy it.

Cyanuric Acid (CYA)  

Prevents 'burn off' by sunlight of non-stabilised chlorine in swimming pools. It binds to free chlorine and releases it slowly, extending the time needed to deplete each dose of sanitizer. Particularly effective in pools equipped with salt water chlorination systems. Not needed for indoor pools.

For pools with saltwater chlorinators, the best results are obtained at a pH of 7.2.

Recommended maximum concentration of CYA: 50 ppm

YOU ONLY NEED VERY SMALL QUANTITIES OF CYA.

As a rough  guide, For a 200,000 litre (200m3) pool, for example a pool  10 x 20 metres, 6 Kg of CYA would be sufficient to raise the CYA level from 0 to 50 ppm. CYA does not get used up - its only loss is through backwashing and heavy dilution of the water from rain, and topping up.

A meduim sized domestic pool of around 4 x 10m, average depth  1m, and using  a salt water chlorinator, would need only 1 Kg of CYA to raise the CYA from  0 - 30ppm. Regular maintenance requires only  a tiny  fraction of this amount.

FAQ

Q: Do I need cyanuric acid?

A. Short answer: If your pool is outside and if you use a salt water chlorinator, YES, you do.

Longer answer: Read our short article before you buy it..

For a more simple explanation:

WikiHow: Test for Cyanuric Acid