Controling Heat and Odor, Opinions?

[floralheart]

My room is roughly 4' x 16'. I have 2 hydrofarm hoods with 4" ducting outlets. I also have a 8" fan and filter that's good for 900+ cfm. My room is 420 cubic feet. No, I didn't plan it that way.

My question is this. Would you buy a new 4" or 6" fan to cool the hoods? Or would you buy 4 reducers, 2 at the front end, 2 at the back end?

Right now I'm looking to just run the 8" fan and 900 cfm fan and filter to control odor on the room. But I still need to cool those lights in that enclosed space. Even with an open floor plan and many feet on the other side of it, 1 light is kicking off way too much heat. Two is going to be worse.

Suggestions?

 

[HidingInTheHaze]

I would keep the fan and buy new 8" hoods.

If you ever plan on running multiple lights there is just no point to buy anything less than 8"

Bottle necking an 8" line in and out of 4" hoods is going to kill your fan power and cooling ability.

 

[floralheart]

good advice. other opinions appreciated.

 

[floralheart]

I think I'm pushing a 4" 200 cfm fan and filter combo out the window, pulling air through both hoods and pushing it out the window. And using the 8" 900 cfm combo to filter the room 24/7. With an environmental control and/or a timer on the room exhaust. Set to run either with the lights on, or with the lights on, plus if the temps rise too high at night.

The hoods are running 1,000 watt lamps.

Speed controllers on both fans. It's a dedicated bloom room, so using a dedicated 24/7 rated at more than double the room capacity on a per minute basis, and the overkill for the exhaust should be overkill without going too far. I guess it's another $140 in insurance, over the next 18 months and I get to keep the fan, and or rehab/replace the filter.

 

[the gnome]

If would stay away from the 4" fan and reducing stuff if your running 1000W'ers

6" min. imo
preferrably 8" as mr haze said


I started using a 6"elicent 150b 309cfm on two 6inch 1KWcooltubes.
it works fine and use the speed controller when the weather cools.
I duct out a window.
in summer with the AC on and the inline at full throttle temps are around 82-84.

during bloom i use a a can 50 filter at the head of the line runiing 24/7
again, works fine with the 6"inline

in retrospect now i would have gone with an 8" fan, cooltubes+ducting.
its more efficient, and quieter

 

[Snow Crash]

Connect the filter to the 8" fan and use that as a room exhaust. Twice a minute is fine to keep the area within 5-6f of the intake (exterior) temperature. Use a 4" fan on the hoods and just have that hot air directed somewhat at the carbon filter. While there will be some heat bleed out into the room the 900cfm of air flow should compensate in that space.

While larger reflectors are better you could probably skip by for a minute with a two fan setup.