Thanks for the answers herb, Ill be starting my grow pretty soon now. I was wondering what can I do to control the smell? My grow will be in a PC grow box doing LST, the walls are sealed up with plastic and taped down with duct tape then mylar paper on the top of the plastic. Since Ill have a 80mm fan for exhaust what can I put on top of the fan to control the smell? Ill only be growing 1 plant right now and doing LST and keeping the lights low to keep the plant smaller. Im looking for a cheap way to filter the air, Ive seen carbon filters but is there any other way?