Thanks Travis Ill try the novus, if I can just get the white to go away, it should be enough. Its in a bar and its a 340gal tank, so replacing it wont be an option (they wont spend that kind of coin again for a few scratches Im sure of it).
Ill work on it a bit with just the novus and see how it comes out, they can then decide if they want to find a "professional".