Okay so I was wondering, how sufficient would using 100W HPS be? Basically I invested in a 250W HPS but don't have the patience for it right now with ventilation. It's pretty hot where I live though. I've heard it's possible to run a 100W bulb without any real ventilation, just a fan blowing on it? Cheers!
If you want to run hps, get your ventilation sorted. Otherwise stick to cfls. Even those can heat up a grow cab if not vented.