well the theory behind the t5 badboys is theyre supposed to be way better then any t5s produce more less heat denser buds etc they say watt for watt its supposed to be better then hid they say doubles yeild i got mine from my hydro store w a money back double yeild gaurentee even lol. but they say they have a better spectrum red bulb then hps and they put off considerably less heat thus allowing you to get them much closer reshlting in more lumens and tighter internode spacing. I own a sunblaze 44 for mums and it gets pretty warm if its on awhile and u get within 6 -8 inches, where my badboys i can put my hand directly on the light after 24 hours if being on and its just warm. dont get me wrong the put off heat but its more above the lamp. Most of the claims sounded pretty crazy to me but everyweek when im in there i seen old growers exchanging hids for badboys so figured id give it a try. one main reason less electricity two w hid i have to constantly vent which means co2 will never be an option, i figure if fhis goes good ill add co2 next time. but i had alot of heat related issues last time not to mention you gotta keep aero res's cool i had to put ice bottles in every hour before now maybe once hakfway thru light cycle. plus no need for big exaust for cooltubes and all that ducting which pisses me off so much... but in light of all tht figured id give them a run and post it here to see and show what they can do havent seen many badboy journals except one on 420 mag which was absolutely sick fhey guy called them the truth he had tennisball colas. check it out. And i figure wat better system to try it with than the mighty aeroflo lol. but i did think tht to as far as what t5s lack the aero should compensate. im excited to try and find out tho =D