Weird algae issue

[JurisHP]

I'm not sure off this is the right place....Lately I have been battling this weird issue where everything (coral, rock, glass) is covered with little red specks. Algae I think? It comes off VERY easily but then floats around and settles back over everything.

The only new thing with my tank is I started a refugium with macroalgae and am running the light 16+ hours/day.

Any suggestions as to why this is and how to get rid of it?

 

[JurisHP]

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