extraction fan and inline fan

lambokid · Oct 29, 2020

hello people need a little bit of help here ive done my research cant seem to find anything I've got a small area of 2 foot wide and 3 foot in length and 4 foot height ive got 600w hps with digital ballast going to run at 400w and do a sog of 9 little plants in 4 litre pots got 4" extractor fan that is 76CFM/ 130m³/h. was just wondering what would be the best size inlet fan to draw air in my area many thanks.

Canada_420 · Oct 29, 2020

Not needed.. though 76 cfm is not much id just upgrade the exhaust fan. Alot of 4 inch fans are around 180 190cfm. Plenty for that space

lambokid · Oct 29, 2020

Canada_420 said:
Not needed.. though 76 cfm is not much id just upgrade the exhaust fan. Alot of 4 inch fans are around 180 190cfm. Plenty for that space

thank you for your help

xtsho · Oct 29, 2020

Yeah just upgrade your exhaust fan and use passive intake. In that size of space a more powerful fan will easily pull through enough air without the need for an intake fan.

lambokid · Oct 29, 2020

xtsho said:
Yeah just upgrade your exhaust fan and use passive intake. In that size of space a more powerful fan will easily pull through enough air without the need for an intake fan.

lambokid · Oct 29, 2020

would this be ok

xtsho · Oct 29, 2020

lambokid said:
would this be ok

How many CFM is that? It should be fine.

lambokid · Oct 29, 2020

110CFM

xtsho · Oct 29, 2020

lambokid said:
110CFM

Well that's not much more than you're current fan. I wouldn't get anything under about 200. You can always turn it down with a speed controller and many already have them included.

extraction fan and inline fan

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