Amount of chlorine?


LifeTime Supporter
Jun 5, 2011
Miami, OK
Just wondering if I might need to recheck my CYA...I checked it mid-Spring and #'s were fine. It has been in the high 90's and 100+ degrees here in OKlahoma......and I have had to daily add anywhere from forty to ninety ounces of bleach. Is that normal with the heat? My pool is problems.....very clean and sparkly........but just wondering...............


Mod Squad
LifeTime Supporter
TFP Expert
May 19, 2010
Tucson, AZ
Certainly would not hurt to retest CYA to see where it is at (what was it last time?)
How much sun does the pool see?

For a 19k gallon pool, 40oz = 1ppm FC ... so if you are only adding 1-2ppm FC per day and staying in the recommended FC ranges for your CYA level, that is pretty good (almost unbelievable actually)

Most pools seem to loose 2-4ppm per day depending on exposure/load/etc.


LifeTime Supporter
Platinum Supporter
TFP Expert
May 7, 2007
Silver Spring, MD
The higher the temperature, the more chlorine you will need to add. For your pool I would expect somewhere around 70 oz of 6% to be average usage. Using more than that on an extra hot day is normal.