I have a 10,000 gal. vinyl. The cya is 60. i live near Beaumont. I was using 1 cup of bleach during the winter months, but now i am using 4 cups to maintain 4 ppm.
I am glad I found this website! My pool water is the clearest ever. THANK YOU for all the info. One cup of bleach a day is all I have added to my pool in three weeks!!!!