Red ciliated microbes?

[razorskiss]

While inspecting some algae under a microscope from my 10 gal, I noticed that these reddish ciliated microbes seem to be everywhere. Nuisance?

They're clearly ciliated and move like paramecia. There are also a smaller population that are clear with green algae in their "stomachs"

 

[taricha]

These red ciliate guys are pretty common in reef hobby tanks, but I've never seen a convincing genus name for them.
They'll graze bacteria or single cell tiny phyto maybe. Should be harmless.