Unfortunately, I had to hang my Fishneedit light. I wasn't comfortable with the legs at all.
I don't know if it changes anything, but; if the tank is close enough to the wall, you can get some large L-shaped brackets to mount behind the tank and suspend the light over it. That's what I did since I didn't want to hang it from the vaulted ceiling.
There's also this type of deal; Hanging Brackets