Algae, algae everywhere!

I have algae in my tank now

Lots of it, too. There's brown stuff on the sand, and then there's this green stuff that looks like little ferns on the tank sides and whisping on some of the rock.

The full tank pic with all the stuff on the glass:

I rubbed a bit of it off to get a pic of some clump of it on a rock.. didn't come out too well, but I think it's hair algae?

And finally, this one rock in the back was pure white when I got it a week ago and now it's a dark color with nice coralline algae (I think/hope):

I'm getting some snails and hermit crabs tomorrow, so hopefully they'll help. I'm planning on letting them eat through the algae while I go up to Tahoe. Anything leftover I'll help cleanup when I get back. They're coming from Miami, though, so hopefully they won't be jet lagged.