I have this strange algae growing I've never seen this before. I don't believe that it is bryopsis, nor do I think it's hair algae. This stuff is not growing in mats. It is very diffuse, it started in my refugium, at first I thought it was bits of Chaeto, but it is not. There does not appear to be any "feathering", it is just one filament. It does not grow as long in high flow areas. And some of the larger strands I can almost make out individual cell structures with the naked eye. Cerith, Trochus, and my Kole Tang do not seem interested. It does not seem to irritate any of my 7 corals. I have one scarlet hermit and have not noticed it picking at it either. Please help me ID this so I can take proper steps.
Display tank
Refugium
Display tank
Refugium


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