sounds like a job for compact fluorescent. you can get some pretty hefty "compact" lamps now, fit them out with reflectors. You do not need a special "grow light" - mostly they are a waste of money and do not work.

A shoplight would also work (depending on the length of the
tank, and where its located).
If the tank is 48" long a standard shoplight will fit
perfectly length-wise (i've used these in the past for
45/55 gallon tanks with fish/plants for that exact reason
and the fact that they're fairly inexpensive)
It should look fine in a bedroom or basement...but
probably not something you'd want displayed in the
familyroom