Low CFM high pressure fan needed? - Growroom Designs & Equipment - International Cannagraphic Magazine Forums

Athos · 07-31-2017, 06:40 AM

Hello there, I would like your opinion on a grow cabinet I want to build.
I’m designing a small cabinet of the following dimensions 1’ x 2’ x 2’ for a total of 4 cubic ft of growing space with 60W worth of light (led bulbs)
Temperatures are quite cold during the night between 40°F and 50 °F, so I would turn the lights during the night so they can heat the space.
According to the ventilation sticky, I would need around 5 CFM to keep the temperature in the desired range of 70°F – 85°F.
A 40 or 60 mm PC fan is what I believe best for this air flow, but the problem is that I want to attach a carbon filter (A MUST), so what exhaust fan would you suggest.

Dropped Cat · 08-01-2017, 02:42 AM

Vortex Centrifugal Inline Fan VTX400, with a Variac speed control,
4" x 12"scrubber.

I use this set up in my rig, slightly bigger footprint than yours.

You could use the PC fan, but why not go with the reliability of the
combo I, and many growers, use.

Costs more, but if stealth is an issue, a no brainer.

Athos · 08-01-2017, 02:49 PM

Kind of overkill, it's too much CFM for a 4 cu ft cabinet with 60 watt of LED don't you think? I was thinking a CFM range of 10 to 20 so with a drop of 30%to 50% I would ve in the range of 7 to 10 CFM which is what I think I need.
Like the Noctua 60 mm A8 PWM
https://noctua.at/en/products/fan/nf-a8-pwm

Dropped Cat · 08-02-2017, 04:01 AM

Quote:

Originally Posted by Athos

Kind of overkill, it's too much CFM for a 4 cu ft cabinet with 60 watt of LED don't you think? I was thinking a CFM range of 10 to 20 so with a drop of 30%to 50% I would ve in the range of 7 to 10 CFM which is what I think I need.
Like the Noctua 60 mm A8 PWM
https://noctua.at/en/products/fan/nf-a8-pwm

I use a couple NF-P14 for circulation, they are very good fans.

07-31-2017, 06:40 AM	#1
Athos Member Join Date: Jan 2015 Posts: 167	Low CFM high pressure fan needed? Hello there, I would like your opinion on a grow cabinet I want to build. I’m designing a small cabinet of the following dimensions 1’ x 2’ x 2’ for a total of 4 cubic ft of growing space with 60W worth of light (led bulbs) Temperatures are quite cold during the night between 40°F and 50 °F, so I would turn the lights during the night so they can heat the space. According to the ventilation sticky, I would need around 5 CFM to keep the temperature in the desired range of 70°F – 85°F. A 40 or 60 mm PC fan is what I believe best for this air flow, but the problem is that I want to attach a carbon filter (A MUST), so what exhaust fan would you suggest.
	Quote

08-01-2017, 02:42 AM	#2
Dropped Cat Six Gummi Bears and Some Scotch Join Date: Jan 2014 Posts: 2,615	Vortex Centrifugal Inline Fan VTX400, with a Variac speed control, 4" x 12"scrubber. I use this set up in my rig, slightly bigger footprint than yours. You could use the PC fan, but why not go with the reliability of the combo I, and many growers, use. Costs more, but if stealth is an issue, a no brainer. __________________ "So we're just done with phrasing, right, that's not a thing anymore?."
	Quote

08-01-2017, 02:49 PM	#3
Athos Member Join Date: Jan 2015 Posts: 167	Kind of overkill, it's too much CFM for a 4 cu ft cabinet with 60 watt of LED don't you think? I was thinking a CFM range of 10 to 20 so with a drop of 30%to 50% I would ve in the range of 7 to 10 CFM which is what I think I need. Like the Noctua 60 mm A8 PWM https://noctua.at/en/products/fan/nf-a8-pwm
	Quote