cfl - Compact FLourescent. There the twisty looking bulbs that go into normal light sockets.
You can get them almost anywhere. I like them better than tubed flouro's. More light in a smaller area.
Those may be alright for a vegging plant, but you may want to consider getting 2 or 3 2700k cfls... maybe like 23/24 watt versions. They would suppliment good, assuming your flouro's are 5k's...