Quote Originally Posted by FormerBromineUser View Post
... Have you checked your CYA lately? BigDave mentioned the possibility of some conversion of CYA ...
I think this may have happened before mary jo started this thread when the FC was 0 for alot of the time. I don't think it's an ongoing issue.

@mary jo: pH test is probably inaccurate with FC at this level, I wouldn't bother with it for now.