my PH was off because of ROWAphos. i used kent and ROWA for 2 days and took it out. now i'm working on slowly getting my PH back up to normal, because i was having a hard time to rase it with ROWA in my filter. everything else looks good. my bubble coral is not fully exended and from white color had turned tan. also my yellow tang showed little interest in food since last 2 weeks.