Can someone explain how CYA impacts the effectiveness of chlorine? I understand that CYA helps preserve/protect chlorine from sunlight. How does that work? Does it combine with and protect chlorine, keeping chlorine from working as a sanitizer below a certain level, depending on the level of the CYA? In other words do you have to have a chlorine level above and beyond a certain point, depending on the CYA level in order for the chlorine to work as a sanitizer?
CYA's Relationship to Chlorine
- Thread starter billy0952
- Start date
- May 3, 2014
- 58,693
- Pool Size
- 6000
- Surface
- Fiberglass
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
Pool Water Chemistry
This thread presents my findings so far on pool water chemistry including the following: More Accurate Calcite Saturation Index (CSI) to replace Langelier Saturation Index (LSI) Calculation of ppm HOCl (disinfecting chlorine) at various levels of Total Free Chlorine (FC) and Cyanuric Acid (CYA)...
www.troublefreepool.com
The above link takes you to our science thread. It gets pretty deep.
Your last sentence is correct. You have to maintain a certain ration of FC to CYA so that a sufficient amount of FC is available to sanitize.
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