Sorry to say Katie....5.5 gal is way to small for any Clownfish.
Instead of investing in a clown fish..you need a good saltwater test kit.
So you can figure out what is going with your water parameters
Your bio load is so heavy now...esp with green hair algae problem
you have. I think you should figure out your water parameters before
adding fish to a system that has problems.
hmm.... i thought she had a kit. i might have to chew her out on MSN later. and i dont think a 5.5 is too small for a clown, and whats in there thats causing too much load now? lol