cfls will work but wont give u dense ass budsand you have to keep them real real close. if you have a 100$ to spend look into www.insidesun.com they have hid for realcheap for bulb ballast nd batwing reflector. i seen a 250 att hps for under a bill and a 400 watt m.h. for a lil over a bill. i got my 250 from them so i know they are legit. flouros wont give you the lumens or penatration or yield you want