Is that the same as sodium dichloroisocyanuric acid?? Anyway, the accepted levels for a "bleach" pool are around 30-50 ppm. Where the Salt Cell manufacturers recommend 60-80 ppm, I believe. Again, some on this site keep their levels much higher, say 120 ppm, with very high levels of chlorine to offset the conversion of chlorine to chlorimide, or chlorine lock, where the chlorine no longer is actively disinfecting the pool water. PoolDoc(Ben) wrote somewhere that high levels of CYA could be considered a good thing, where it preserves your chlorine longer and prevents it from being burned off in the sun. This way you don't have to add chlorine as often . . . it had something to do with the chlorine's reaction time to bio-bugs in the water. The downside being that highly stabilized chlorine has a slower reaction time than chlorine with lower levels of stabilizer in the water. I think he said high stabilizer levels kept the chlorine in reserve and released it as needed, but the time it took to release the chlorine added to the chlorine's disinfection reaction time . . .Something like that, I remember the article or thread was a very interesting read, wish I could track it down, but it may have been lost when the board crashed . . .
Hope this is helping you, I think you just need to bump up your cya levels a little . . . the debate is ongoing about cya levels and where they should be, everyone seems to differ on that subject a little.
-SJohnson
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