so do you think that it is worth adding the extra wattage to have my lights air cooled? Is their any way i can keep my room to stay warm with out using a high wattage heater? i was thinking that if i got a temperature controller and plugged it to my exaust that the ballasts my create enough heat to heat my room, and the exauhast would only turn on when it got to 78F. Does my ballast have enogh energy to do that? keep in mind that my room is insulated and all the windows and doors will be closed once i get a ventillation system going.