Hey flam; quick question for you, my dimensions for my box will be around 2x2x3, it's going to be pretty stealthy grow so I was wondering,
would one of those 6" inline fans work? I mean it has like 160-250CFM according to the "label." Would just one fan work? I'm only using CFLs and,
should I use passive or active intake holes?
(First grow) Thanks alot
ps. looking wicked.
Sounds similar in size to my little clone box. Did you check out my plans and the stuff for that? I just used a pc type fan but from radio shack. It runs off of AC 120V(which means you don't have to rig up any phone charge ac to dc adaptor. A simple splice of a lamp cord will run it) and has a sturdier metal frame than those plastic pc ones. It wasn't much. The general rule of thumb is that you want to remove the amount of air in 3-5 minutes. So for yours youre only talking a small volume of 12 cubic feet. So if you can find a small fan to run 2.4 cfm per minute. In your case the 160-250 CFM would work nice. Do you understand why? Pretty much any fan you find out there is going to do the job. Use the strongest fan you can afford that fits the space without interfering with the operation.
Those inline fans would work nice. Especially if you get it mounted without much vibration and such. Centrifugal can fans would be over kill in your situation I think but generally you would use those when you need to move not only a volume of air out fast, but over far distances, twists and turns, and heights etc. The key is to make sure that the heat is taken away from the space and not recycling it back to where the inputs are drawing their air. This I think is the most key important and something I see a lot of people on the forums doing lately. I'm personally doing both passive and active system of intake. Your space is so small, I think passive would be fine though.
Nice that you mentioned intakes. I'm actually back working on my room and have lots to post soon on it including a nice story on why i've been gone and not busy with it. As you can see when I posted #1 was a long time ago. I'm working today on the last touches of my venting system. A general rule of thumb I have learned is that if you use passive intake, then the area of the opening should be twice that of the area of the exhaust. So if you use a 6 inch fan, then 2 6 inch circles would do the job. (or the equivalent to in a larger circle or a rectangle. It is recommended to use active intakes though and run them at I believe 80% or so of the output so that air is always traveling into the space at a bit slower pace of the air being remove. If you have more air going into the room then all of the air that the output can't handle will be pushed out of any cracks or spaces elsewhere in the room. Another important reason to seal and make your spaces air tight. This will help manage the scents.
Thanks for stopping by. I'll have some pics and updates on my custom tanks, a neat-o stealth intake and exhaust system, final start up specs, and much much more soon.