small refugium.. what to go in it?

[asylumdown]

I took this pic last night, you can see how much macro algae is on the rocks. 4 days ago I spent over an hour re-arranging the rocks and shaving all the algae down to size. In another 10 days, the darker coloured algae will be 2 inches long. It's really firm, and very well attached. When it 'matures' it develops lighter grey/purple balls at the tips of it's branches that have really fine hairs all over them, makes it look like they have a halo. While the description might make it sound pretty, trust me, it's not.

It's been in the tank since day one, and even the lawn mower blenny I used to keep in there wouldn't eat it. I'm sure if I had a tang in there it would be gone in an hour - just in time for the tang police to bust down my door and read me my rights. I think the fuge is the better option.