Why not? You could save quite a bit of money, has the same warantee (sp) as a new one. And after all the gunk gets on it anyway you won't see any scratches. Not to mention that it will be behind the tank. I mean it's your choice, I am by no means trying to make this sound bad in any way. This is an expensive hobby and if you can save a buck or two, it helps down the line.
Anyway good luck.
Mike