Axial fans CFM drops off real fast under load. A centrifugal fans CFM will stay steady under load, that might be the problem your having.

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Current Grow: White Rhino from seed (in veg)
Previous Grow: Hashberry/Lockdown Cross
Smoke Report: 2 years in storage

Not sure what kind it is, the box doesn't say. It is an 8" In-line duct fan that is 500cfm made by "Inductor"

Here is a link for the 6" version, they don't have the 8" on their site

http://www.homedepot.com/h_d1/N-5yc1...atalogId=10053

What kind is it? I messed with the filter more and think I got it. I can't really tell until I get to time for it to smell though anyone.

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My First Grow: DIY DWC CFL Snow White with HD pics!
Stay Smokin'

That's an axial fan. A centrifugal fan is going to look like http://www.plantlightinghydroponics....-c-76_352.html

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Current Grow: White Rhino from seed (in veg)
Previous Grow: Hashberry/Lockdown Cross
Smoke Report: 2 years in storage

So is it most likely not going to work? Should I just keep it around until it comes to be the moment of truth and I start getting a scent? the filter I made should work, I just don't know if that fan is getting enough suction in general to do it because it is 8' in the air at the top of the closet.

__________________

My First Grow: DIY DWC CFL Snow White with HD pics!
Stay Smokin'

That's going to have to be your call as I don't know what type of risk you'd be running. I would however have plans in place at the very least. That way if you do have to switch to a new fan you'll be able to do so quickly.

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Current Grow: White Rhino from seed (in veg)
Previous Grow: Hashberry/Lockdown Cross
Smoke Report: 2 years in storage

That is true. I honestly just can't even tell if my set up will work. the fan is so high up. I don't really know what to do.

__________________

My First Grow: DIY DWC CFL Snow White with HD pics!
Stay Smokin'