HTH Liquid Chlorinator, 10% sodium hypochloriteWhat liquid chlorine are you using?
Without reagent, I can barely see the dot at 30. With reagent, it tests at 80. I originally added 1 pound stabilizer via sock and 20 ounces trichlor via floater. I know you're not supposed to backwash during that time but I was backwashing multiple times a day. There's just no way it's anywhere near 80.Grab a sample of pool water and look at it in the view tube. I'll betcha it hardly looks cloudy at all. Do the CYA test. You may have started at 20, if so now you're at 50, and thus you're keeping too low a FC.