I wish I could get a better picture. I have been having this algae problem lately. It is like long strands of algae that have bubbles at the end of them. You can see it in this picture. They seem to mostly hang off my corals, but you can see them all over the rocks as well.
Paramaters:
pH 8.4
Ca 420
Mg 1480
Alk 7.7 dKH
NH 0
NO2 0
NO3 0
I just changed my sump around and removed some of the rock and added Cheato. This problem was before that. I use a GFO and Carbon reactor. I have 2 Radion gen 1 lights at 75%.