Thanks for the sub!
I think you should go with an invert tank, with a small fish or two in there if you want fish. I think Maroon Clowns get too large for a 5g, unfortunately. There's endless possibilities with inverts, though.
Here is a link to a 5g thread. It's just where people post pictures of their 5.5g, or 5g's. You can use it to help you think of a scape for yours, or get an idea with what you want to do with the tank.
http://www.reefcentral.com/forums/sh....php?t=1897445
Do post a build on your 5g. I love any tank with special inverts
