Oh! Okay well there is not any yellow brown stuff mostly white? And there is some small spots but I mostly think that's from before when I had a refug and a small Protein skimmer in the same sump.
Running a skimmer will prevent a cyano outbreak though?
@Pete polyp
I mean there's been huge changes to my tank in the last month haha so who knows what will happen.
Just tested Nitrate and there is already a change of color. I think its at 0.25 or a little lower. Maybe because I don't have that many corals in my tank? So it didn't get absorbed so fast?