hi all yet another noob question i have one auto mazar under a 125w cfl will switch to to 150 hps bout gettin rid of heat and smell idea 1 duct thru my my attic and outside thru a unused flue powered by a lil pc fan or idea 2 the same idea but with a decent 4in fan carbon filter kit as cash is an issue which should i do cos i never grown anything before i have no idea how stinky it will be is the filter kit a bit much. will the pc fan pull enuf out to control odour.any input welcome cheers