cfl's are great . but you need a few of them in order to get the girls going...I would get at least 4 and buy some ceramic light receptacles and take a board or piece of plywood and cut it the length of your grow...mark where the receptacles go...
then drill a hole for your wires and feed pigtails through hole...screw receptacles to board...wire them all together with romex...make a chord, screw in bulbs and place over plants...you have 600 watts of cfl lighting
...You need one per plant or 2, but the more the better...I am building one of these and will post a stepbystep when I'm done...hope this helps you out, if not let me know.
keep in mind...the more light=more yield...imho