Quote Originally Posted by HARDDON
If your carbon filter is designed to pull air thru and out, then you should operate it this way. Pushing air thru a filter that is designed to suck air will greatly shorten the life span of the filter itself.

Either way, as long as the top heat is removed you are fine. The air that comes out, if you unit is located at the top should be vented out and away from the grow area.

It will remove the higher levels of air heat and you need not screw with air cooled reflectors unless you are running dual 1000 watt lights.

a 1000W light with a fan on it does wonders...no need for special stuff...you can still get within 12" of the canopy.

Which is plenty.

But follow the designed air flow your carbon filter was built for.

Both options are 'sucking' air through the filter, maybe I should have phrased that better. The only difference is that one possibility would be too ehxaust the air through the reflector, the other is sucking air through it, does that make sense?



Quote Originally Posted by oldnslow
I'vs always been a "fan" of pulling air thru anything rather than trying to push it with the Dayton squirrel cage fans. #2 would be my choice. That allows the possibility of creating a negative pressure room and that will easily allow you to totally control the incoming air, the temp, humidity, and co2 if used. All you need with a negative pressure room is an envrionmental controller. That will allow you maintain the best growth conditions day or nite, winter or summer. Good luck

Yes that's what I originally expected, because air follows the path of least resistance. So you would have the fan seperate from the filter instead of the fan/filter together. One thing I don't like is the ehxaust, if you are blowing you are at least using the exhaust somewhat, it just seems like such a waste.


Any other opinions
MegaOctane12 Reviewed by MegaOctane12 on . Ventilation Question Ventilation question I need answering, two potential setups, which one would work better? 1) Carbon filter at the top of the room, connected directly to an extraction fan. Fan sucking air through the filter, blowing air through ducting into an air cooled reflector, ducting connecting the adjacent end of the reflector taking air out of the grow room. 2) Carbon filter at top of the room, filter connected directly to ducting, ducting connected to air cooled reflector, adjacent end of Rating: 5