How Much CFM for a 4'x4'x6.5' Tent? +rep

A 4" centrifugal(160-170cfm) would vent that space in less than a minute....more than enough but they dont come much smaller. I've never seen anyways...
 
Simple rule is: You wanna be able to move all the air in your room within a 5 min period. Your room is approx. 105 cubic feet so any fan that pushes more then 105 CFM you'll be good. Redi Jedi is right,even the 4" inline fan would work for you. Hope this info helps you out.
 
plantz said:
ty so much all +reps. Will a 170 CFM fan be enough if i have a carbon scrubber too?
Click to expand...

It will be fine....just get a filter thats rated for the same cfm or a bit more. There is some reduction in flow but its nowhere near 70%

If you make your own filter, make it the same size as a commercially manufactured filter thats rated for the same cfm as your fan. Surface area and bed depth are important.
 
redi jedi said:
It will be fine....just get a filter thats rated for the same cfm or a bit more. There is some reduction in flow but its nowhere near 70%

If you make your own filter, make it the same size as a commercially manufactured filter thats rated for the same cfm as your fan. Surface area and bed depth are important.
Click to expand...

ty so much +rep!
 
Also the number of bends and elbows in your setup will reduce the airflow.... I would be tempted to go the 6 inch and if you need to put a variable speed switch on it and dial in what you want... Also if you are running CO2 don;t beputting out CO2 while venting....
 
madcatter said:
Also the number of bends and elbows in your setup will reduce the airflow.... I would be tempted to go the 6 inch and if you need to put a variable speed switch on it and dial in what you want... Also if you are running CO2 don;t beputting out CO2 while venting....
Click to expand...

Im not completely retarded thanks though.
 
You got a 400 watt lamp and 104 cubic foot of space in that tent. Get a six inch sunleaves Windtunnel. No calculations needed,enough time has already been spent. This windtunnel is a 100 percent plastic fan which the quietest fan there is rated for 409 cfm although mine tested at 450 but hey. No question it will handle a properly made filter too. However, you can't use a variable speed controller on it though because it has fixed frequency capacitor otherwise it'll make whining noise if you do.
 
elduece said:
You got a 400 watt lamp and 104 cubic foot of space in that tent. Get a six inch sunleaves Windtunnel. No calculations needed,enough time has already been spent. This windtunnel is a 100 percent plastic fan which the quietest fan there is rated for 409 cfm although mine tested at 450 but hey. No question it will handle a properly made filter too. However, you can't use a variable speed controller on it though because it has fixed frequency capacitor otherwise it'll make whining noise if you do.
Click to expand...

Do you have a link for this product?
 
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