Thanks for the reply, I use a Taylor FAS-DPD Test and do titrate. I used to use Baquagunk but changed my filter and liner last year and went BBB. I test before I pour always. I have been doing it 2 to 3 times a day. My clorine has been consistently that high when I test. About half gets consumed during the daylight hours, maybe more. What am I not doing right??