ok so will this be suffecient? i have a uvb light and a 150W flouresent light that is ment for heating for reptiles and growing plants in the same enclosure. and i am going to use a pc fan to vent. now if i just run the air out into the attic with no filter or anything would it smell inside the house too? and if i ran it outside without a carbon filter or anything, would u be able to tell i was growing?( the place that i could run it outside is on the front of the house on the 3rd floor, so if someoen walked out could they smell it?) thanks again