i also am growing on a budget, and cfl's are nice can add 1-4 a week for 5 bucks at lowes. you can get the lights right next to the plant, and if you keep it trimmed up you can have some nice yeilds. i have 4 cfl's on one plant 1- 13watt 5000k,1-27 watt 5500k, 1-27 watt 2700k, 1-42 watt 2700k...