Ventilation dilemma

[ogrow]

I was hoping I could get some help with the ventilation for my new SOG room that will have 2 x 1000W and possibly 4 x 1000W in the future.

The size of the room is ~1000ft3. It's not heated, so in the winter the room is cold and in the summer it barely gets warmer than 70F.

I've been looking at a 470CFM fan after reading the Ventilation 101 thread... or at least the easy parts, 5 min/air change. But I got an advice to up it to 800-900CFM.
I don't want to have too much power to stress the babies and I don't want problem with mold and so on either.

What do you guys say?

 

[RM - aquagrower]

The general rule is about 400 cfm per 1k. So an 8" inline (I like vortex) would be the fan I would use w/ 1k. But if you're planning on adding a couple more lights soon then....

Probably best to just buy the biggest fan/filter that ya can afford. If it turns out to be too much, ya can put it on a speed controller. Overkill is underated.

Airflow ain't gonna stress the plants. Lots of folks recomend exchanging all growroom air 2x per min.

 

[ogrow]

Great!

The biggest fan it is then with a controller. Thanks for the answer

 

[RM - aquagrower]

The general rule is about 400 cfm per 1k. So an 8" inline (I like vortex) would be the fan I would use w/ 1k.

Oops. That was supposed to say 8" for 2K. Sorry. It was a typo that I didn't catch.

May also want to look into "duct mufflers" (diy or store bought). A vortex fan itself is pretty quiet, but the air rushing in/out can sound like a jet turbine.

 

[ogrow]

Thanks!

The Can Fan I'm looking at actually has a builtin silencer, even though it's not that big of a concern. The area where the fan will be is already quite sound proofed. Every bit helps though