Quote Originally Posted by jmjbj_h View Post
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??
If you have algae AND no CYA, you would have to add chlorine almost hourly to maintain any kind of FC level. Maybe you've killed it. The water turns blue-gray when the algae dies, and maybe liner color or pollen MIGHT be throwing the color off.

The sun is probably eating it during the day, but if it holds overnight, I can't imagine you have any algae left. Have you considered that it could be a copper issue?