I have fourteen 8' fluorescent hanging from the ceiling in my little garage. It lights up the garage like Dodger Stadium!
However, I am told that due to new EPA rules the replacement bulbs may be soon hard to get.
One thing I learned is using the right color and temperature range of the lights, especially if you are trying to do waxing and finishing. When I installed them I talked to a friend that runs a body shop and he told me what they use for the best representation. It's been so long I will have to check. But I do know that the "soft white" lights were wrong.
Good luck!
