for the money this is a great light to start out with. It will do 4-6 plants in a small area. Will create heat so a fan or ventilation will work. If you dont want to go this way cfl will do the trick. You can get 42 watt cfl 150 watt equivalent 2700k for flowering at the home depot for around 10 bucks a peice. You can get a clamp on light put a bulb splitter run 2 bulbs per fixture. 2 fixtures total of 4 bulbs will get you started costing around 50-60 bucks. for 30 more you can get th light and get great results...
Super Econo Hydroponic 400 Watt HPS Grow Light - eBay (item 120569946411 end time Jun-13-10 11:10:09 PDT)