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grangerhj
05-23-2006, 08:47 AM
I have read conflicting info on this. However in reading some of your posts it appears that people have left their cya high and just switched to Bleach instead of a Tri-chor or Bi-clor product and just adjusted the FC higher.

So I guess I have 2 questions- is it ok to swim with an elevated CYA and is it safe to swim with a FC of 10-15ppm?

Thjanks for help in advance. I am driving myself crazy trying to lower the cya in a fiberglas pool. It hot here in LA and my pool water looks great and I really would like to be swimming.

mbar
05-23-2006, 10:20 AM
The higher the cya in your pool, the higher you have to keep your chlorine level - it won't hurt you. Here is the chart:


Stabilizer . . . . . . Min. FC . . . . Max FC . . . 'Shock' FC
=> 0 ppm . . . . . . . 1 ppm . . . . . 3 ppm . . . . 10 ppm
=> 10 - 20 ppm . . . . 2 ppm . . . . . 5 ppm . . . . 12 ppm
=> 30 - 50 ppm . . . . 3 ppm . . . . . 6 ppm . . . . 15 ppm
=> 60 - 90 ppm . . . . 5 ppm . . . . . 10 ppm . . .. 20 ppm
=> 100 - 200 ppm . . . 8 ppm . . . . . 15 ppm . . .. 25 ppm

When you get your chlorine number high, the only thing that may happen is that your bathing suits may fade a little. It won't hurt you.

aylad
05-23-2006, 08:36 PM
I live near Shreveport, and my CYA stays 80-90 ppm (intentionally--my pool gets direct sun all day). I keep Cl level at 7-9 ppm all the time, and swimming is no problem.

Janet

cajunfla
05-29-2006, 10:51 AM
Other than draining and refilling, is there another way to lower CYA?

aylad
05-29-2006, 12:05 PM
It's the only practical way. The other way is to let your pool go really, really, really green and let the algae break it down. I'd rather drain/refill!

Janet