okay thanks for your input.. also can anyone tell me if this is a good system? its not to bad on price, how would this work for growing.. and if i bought this, what other things would i have to buy? or is a fan pretty much all i would need?

400 watt HPS GROW LIGHT 400w High Pressure Sodium Lamp - eBay (item 180136925188 end time Mar-31-08 12:04:56 PDT)