yea ive been using a grow tent i really didnt see how bad the intake nets at the bottom were untill my plants started dying. now i just keep it unzipped at the bottom because the fan im using creates alot of suction. how could i get fresher intake air without laying flex across my room? it exaughts into a carbonfilter that sits in the closet with the tent. What do u think about dry ice to boot CO2?