I have a 4x4 tent I'd like to set up. Ive got a 4" 155CFM Canfan, 6" axial fan, 1000W Dimmable Ace ballast, 8" air cooled reflector. Just need a carbon filter and possibly another fan. What I want to know is if an axial fan can pull air through a carbon filter, cuz if it can I can just use that. Otherwise I'll need to purchase another fan and a filter, and i'm strapped for cash. My tent sits right under my attic access, which has my range hood ducting going outside right beside the access, so I'm going to stick a Y-adapter on there and exhaust my tent to that. Should I go light > duct > inline filter > duct > canfan in attic to y adapter or keep my filter and light on separate runs? I guess I have most of it figured.. just need to know if my 6" axial fan is going to be enough or if I need to buy a 6" canfan.
What's up man, sounds like a nice setup you have. I would keep smell and heat separate so you can use smaller fans on each system instead of having a bigger fan that has to do both. So in this case it would be: Duct>Light>Duct Out>Fan & Filter>Duct Out>Fan I may have misunderstood but it sounds like you will need a 8">6" reducer for your fan/cool hood combo.
I would have a fan suck outside air, blow it through your hood, then vent it outside. Use another fan for odor control. I would be really worried about heat from a 1000w bulb in such a small tent. I run LED and heat is an issue (ok I run 1,000 actual watts of led but still!) http://forum.grasscity.com/indoor-grow-journals/1316222-4x4-led-wild-thai-seed-second-grow.html#entry20304616