So about a week and a half ago my frag tank started getting cloudy and brownish. I have been trying to clear it up ever since. First I changed the carbon and GFO, then I started small water changes every other day, then tried a 25% water change, and last tried a flocculent. Nothing seemed to help. Water changes cleared it up some but not to as clear as it usually is and within a day it's back to how it was.
I cannot figure out what is going on here I'm totally stumped. Anyone have any ideas. I really need to fix this because it's starting to effect my SPS frags (I'm about to move them To the display till I figure this out) but all zoas and palys are fine. Any advice or info would be greatly appreciated.
Thanks in advance,