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CYA Testing - Further Reading - Trouble Free Pool CYA Testing Follow the instructions for CYA Testing in Pool School Read all of the notes in the Pool School article Many people find the CYA test the most difficult to interpret and get consistent results
The Free Chlorine and Cyanuric Acid Relationship Stabilizer (Cyanuric Acid or CYA) CYA protects your free chlorine (FC) from the sun, reducing the amount of chlorine you need to add daily Too much CYA (more than about ~90 ppm), and it becomes difficult to maintain disinfecting FC levels
CYA – Cyanuric Acid Test - Trouble Free Pool Cyanuric acid (CYA) is the chemical name for the product commonly called “pool water stabilizer” or “pool water conditioner ” CYA protects free chlorine (FC) from the sun and protects swimmers from chlorine Accurate testing of the CYA level is critical to managing your pool water and is the one test that is most often performed incorrectly These instructions are intended to be as
How did the CYA levels get so high in my pool The main problem with the higher CYA is that it reduces the active chlorine level allowing algae to grow faster than chlorine can kill it You can compensate for this by raising the FC level as the CYA level changes (i e follow the Chlorine CYA Chart), but when the CYA gets very high (above 80 ppm especially) it gets risky because IF you let the chlorine level get too low and then need to
Cyanuric Acid and Alkalinity. - Trouble Free Pool Cyanuric Acid and Alkalinity I'm not sure if this has been posted elsewhere and I've read quite a few posts but not seen it mentioned I read a paper some time ago regarding the Total Alkalinity and Cyanuric Acid It stated you must use a correction factor to correctly ascertain your correct
Free Chlorine - Further Reading - Trouble Free Pool What is Free Chlorine in a Pool? Free chlorine, as measured by a TFP recommended test kit, is the sum of two forms of chlorine in your pool water - active chlorine (the chlorine compounds that directly oxidize bather waste and kill pathogens) and reserve chlorine (the chlorine that is bound to the cyanuric acid stabilizer, or CYA)
Chlorine CYA Chart - Trouble Free Pool EDIT: You will find a simplified and standardized version of this chart at Pool School, Chlorine CYA Chart Chlorine CYA Chart by Chemgeek FC = Free
CYA removal - Trouble Free Pool I know to remove cya it is cheapest and best to do a partial drain on our aboveground pool We did the partial with our pool a 6 times before closing it and drained it down a below the return when we closed it 5 partial drains were only below the skimmer and 1 partial drain was about half way
Salt water pool and CYA question - Trouble Free Pool Brand new pool was plastered and filled about 2 weeks ago We've been brushing, adjusting pH, alkalinity, and chlorine levels The salt is being added in 2 more weeks Currently CYA levels are fairly low, we were told by the project manager to just use the chlorine tabs with the stabilizer for