CYA...What is it?

[eric.fuller.92798]

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What is this CYA everybody talks about?

 

[BoDarville]

Cyanuric acid, often called stabilizer or conditioner, protects free chlorine (FC) from sunlight and lowers the effective strength of the FC by holding some of the FC in reserve. The higher the CYA level, the more FC you need to use to get the same sanitizing effect. Suggest checking out the ABC's of Pool Water Chemistry for more information.

 

[timerguy]

too little is no good, you'll lose more FC to the sun burning it off. And too much is not good either. Just right is 30-50 for a non-swg pool which depends on where you live. Lots of sunshine means you need it closer to 50. Your location in your profile and pool equipment in your sig would be helpful too.