ID this algae (microscope)

[stanleo]

It floats like pond scum on top of the fuge. Not a lot, not so much to be really concerned about but I would like to know.

Focus is as good as it is going to get unfortunately.

 

[reefdoink]

I'm not really sure based on the picture. But here is a link to common algae in a tank.
If you get an actual picture of the algae, I am sure someone can help.

Reef Cleaners

A good guide to identify most of the nuisance algae that plagues the hobby. Complete with pictures and suggested treatments

www.reefcleaners.org

 

[taricha]

The filaments are a green cyanobacteria. Cyano (and various other "scum") often forms a film at surfaces, when given the chance.