That's what I'm afraid of. What would cause it and how do you rid it. I had a phosphate spike about 2 weeks ago and now I have this. I hooked a phosphate reactor up last week.
Yea I check all my levels n everything is on point.. I just realized yesterday my bulb for my cheato and algae section in my sump has been out.. Maybe this could be the problem who now show long it's been out but has to be a while cause cheato has shrank where usually I would've cut it 2-3 times in a month.. Put a new light see what happens