This link my help. It shows you how to interpret off the scale OTO results:> http://pool9.net/oto-chart/
Also, this chart shows you how high chlorine levels need to be kept based on the CYA reading:> http://pool9.net/cl-cya/
For now, aim for keeping your chlorine between 12-15ppm. In your pool, each cup of 8.25% bleach will add about 1ppm and each quart will add about 4.5ppm. Use those as a reference to help you figure out doses of bleach to add when you test.
Bookmarks