I'm going to use CFL lights for my grow, but I'm pretty lost when it comes to making it work. All my life I've just screwed bulbs into lamps and thought nothing of it, basically. I've tried to figure this out myself, but I am still confused. What is a ballast, and for what bulbs is it needed? How are grow CFL's different from household ones? Are they cheaper per amount of light? What is something like a lamp in its simplest form called, just a fixture I can put a bulb in and light it up? Anything else I should know?