Got a pretty basic newbie question here. I'm all set to begin my first indoor grow and I've set up a makeshift grow space in my basement. Growing in a soil/perlite blend under 6500K CFL lights. Got floor-to-ceiling panda film surrounding my setup. Ventilation isn't terrific because the setup is located in a back storage room in my basement, but the grow space is an 8' x 5' rectangle located within a much larger room, and i have an oscillating fan to keep the air moving. Everything seems to be decent, or at least passable for a beginner grow setup, except for one detail: the room is COLD. And the humidity's not quite right. Directly under the lights, I'm getting a reading of 61 degrees and a relative humidity of 70%. From what I understand, optimum grow room temperature is roughly 75 degrees, and optimum relative humidity is 40-60%. I'd rather not buy a space heater for the grow room because I'm trying to keep expenses at a minimum, and I'm concerned about the electricity cost for running a space heater 24/7 for more than 3 months. Not to mention the possible fire hazard of leaving a space heater unattended for most of the day every day. So here's my question: Should I even attempt the grow with the grow room hovering around 60 degrees, or is it impossible to grow plants at that temperature? I'd wait to begin my grow til the summer, when the basement will be at least 10 degrees warmer, but my lease ends in August and my roommates and I are moving out, so it's pretty much now or never.