Hi Grasscity! Just a quick question here: I have a grow tent with only one 6 inch vent and the rest are 4 inches. I have a 6 inch cool tube HPS and a 6 inch fan. I know people scorn against duct reducers but it looks like the only option. Would it be ok if I used a 6 in to 4 in duct reducer on the other side of the cool tube for the output vent for heat? Thank you for your time Grasscity!
You could pull the air through a carbon filter then through your fan then our through the 6 inch vent. Carbon filter=>Inline fan=>Light=>Out of tent.
1: I'll be treating heat and stink with separate ventilation 2: I thought carbon filters where used for treating smell, doesn't it make sense to have a carbon filter on the way out of the tent?
Not really you'd be sucking the air inside the tent through a filter first to filter it. Just another way to do it. If you use a reducer make sure your fan has some more oompf to it. You get reductions in air flow from long tubes, turns, and reducers.