Definitely not. It's only suited for this tank because it's so shallow. It's still really low light.
There are tons of fixtures that would work with a standard 5.5gal tank, though.
Question on the fixture, seems like a good deal price/light wise, would you suggest it for use on a 5.5gal? Currently just have a CFL in the stock hood and having issues with light reaching all parts of the tank.