all you really need 2 do is cut floor vents in your room(if in a house with foundation) and have and exhaust fan that will exchange the air. the air under your house is nice and cool and al ways fesh becuase air is always being replaced. my grow is currently on cement so i will have a duct booster with a air sock. that turn s on when temps get 2 high. 4 inch vortex exhast(8x8x
that will be hooked up 2 a grozilla reflector on the other flange will be a carbon scrubber. exaust fan will be on full time 2 recirculate the rooms air im also using a 4 ft light rail. any thoughts on ducting thats movable?