Is there even a chance of this fan pressing Air through normal Carbon filter?

Hey guys. Doing a diy grow box, and im using pc fans, but i wanna find an effective way to use a Carbon filter. I bought 3 fans, 2 exhaust and 1 intake.

My pc fan: Noctua NF-P12
High pressure, very silent.

I was wondering, if this pc fan will even have a chance of pushing through a “normal” Carbon filter for big fans? Since carbon filters have more space for the air to be pressed through, than if i would do a little DIY Carbon filter, i thought that maybe the fan has less resistance? As long as the Carbon filter has same thickness ofc. And if thats the case, i would make the 2 exhaust Press Air through one Carbon filter.

Anyone with experience, or know anything for sure?

Thanks!

The important thing about fans in this regard is how much air they can move...How many cubic feet per minute can it move? Most are about 80 which is enough for a carbon filter...

As far as carbon filters, well for a small pc box grow, the best idea I ever saw a pic of used smoke buddies

Man you would almost have to try it.... mount the fan to it so it pulls air through the filter and put a trash bag over the fan and see if it fills it up. Or if you are trying to push air through the filter, mount the fan to it and fill a trash bag full of air and hold it tight around the fan and see if it empties it. My initial thought is no fucking way it would work, but now Im second guessing myself because the fan would be pulling/pushing very little air and with a filter that big it might not be putting much restriction on it.

Do it, post results. If you couldn't find the answer, someone else might be looking too. Keep it rollin' man

Diy a mini carbon filter with fish store carbon?

Try that black carbon filter sheet/pad that goes in air purifiers?

I'd try the sheets they are like 1/4" thick. I use them on a air purifier and they're decent and cut to fit.

I use a 4" Vivosun because the vendor had answered a question on Amazon specifically stating that it's rated to allow for air to be pushed through it.

Almost everything advised so far is incorrect

Yeah a pc fan can do it

What you are looking for is the static pressure rating

Like this one is good

Noctua 140mm NF-A14 industrialPPC IP52 PWM Fan (Max 3000RPM) - Umart.com.au

Buy Noctua 140mm NF-A14 industrialPPC IP52 PWM Fan (Max 3000RPM) - Umart.com.au Fast-Shipping & Pick-Up

www.umart.com.au

So that one is over 10, no problems getting through a filter

Anything over 5 is suitable

Good luck

weed-whacker said:

Almost everything advised so far is incorrect

Yeah a pc fan can do it

What you are looking for is the static pressure rating

Like this one is good

Noctua 140mm NF-A14 industrialPPC IP52 PWM Fan (Max 3000RPM) - Umart.com.au

Buy Noctua 140mm NF-A14 industrialPPC IP52 PWM Fan (Max 3000RPM) - Umart.com.au Fast-Shipping & Pick-Up

www.umart.com.au

View attachment 4508066

So that one is over 10, no problems getting through a filter

Anything over 5 is suitable

Good luck

Click to expand...

So question about static pressure and why is this more important here rather then cfm which is the more common of the two parameters in which airflow is measured in fan preformance... why not cfm given the cfm rating is rated at the full static pressure of the fan or a given static pressure the fan can produce, i ask this because cfm is much easier to determine how much you will need based on simple measurements and a simple instrument (tape measure and brain) even if you dont calculate the loss in the duct work (lets assume his diy grow box doesnt have more then 100ft of duct lets just say its 25ft or 50ft of duct and you have a 20%-40% loss in a diy grow box of lets say 4'x4'x6' a total of 96 cubic feet, 4 inch inline duct fan rated at 200cfm would be more then capable of moving the volume of air in that room and exchanging it for new clean air over the loss in the ducting... more importantly the reason we determine cfm rather then static pressure is static pressure is how well the fan moves the air not how much volume the fan can move per hour, also the point isnt to take away the smell (certainly is in some cases but most cases) people install exhaust fans in a grow to echange the total volume of air in the room and if you want good clean air in your room then you want a fan that can remove the total volume of air in your room at a higher rate then your intake to create negative pressure in your room and passively (or powered intake) intake fresh new air to replace it. Carbon filters take smell away so installing one of those in the room to exhaust and one to intake through is a good idea if you are worried about smell but the fans exchange air in the room at a rate in which the room should be fully exchanged 3-5 times and hour to have fresh clean air for your plants (really it should be fully exchanged every 3-5 minutes but a grow box or tent or room is different because much of the space is taken up by plants and equipment reducing your over all volume of air... If i was him i would buy an inline duct fan 4inch (runs ya about $15-$20 on amazon) and some 4 inch flexible duct, use the fan to exhaust the grow box and use a passive intake (no fan just a vent to allow air to be drawn in) and filter the air with the cheap square allergen and pollen filters at walmart for a few bucks a piece run 2 taped together over your passive intake (a.k.a vent hole)... if you care about the smell then instal carbon filter on the draw side on your fan as to draw the air to be exhausted through the carbon filter to clean the organic materials (aka terpenes) floating in the air in your grow box... most people determine volume of a room and depending on ducting shoot for a cfm value of 50%-100% more then they need in order to create the negative pressure... either way good luck, those pc fans are nice for cooling electronics but are not designed for this application, i think they will be better suited circulating the air inside your grow box

Blomz said:

Hey guys. Doing a diy grow box, and im using pc fans, but i wanna find an effective way to use a Carbon filter. I bought 3 fans, 2 exhaust and 1 intake.

My pc fan: Noctua NF-P12
High pressure, very silent.

I was wondering, if this pc fan will even have a chance of pushing through a “normal” Carbon filter for big fans? Since carbon filters have more space for the air to be pressed through, than if i would do a little DIY Carbon filter, i thought that maybe the fan has less resistance? As long as the Carbon filter has same thickness ofc. And if thats the case, i would make the 2 exhaust Press Air through one Carbon filter.

Anyone with experience, or know anything for sure?

Thanks!

Click to expand...

How big is the grow box you are building, what are the measurements? DIY carbon filters do work but for how long depends on how well you pack your filter, activated carbon can only absorb a given amount of organic material from the air (terpenes floating around breaking down creating that smell) i drew up a diy carbon filter idea for you andni applogise as its not the best schematic just a rough idea of something that would work diy style...

weed-whacker said:

Almost everything advised so far is incorrect

Yeah a pc fan can do it

What you are looking for is the static pressure rating

Like this one is good

Noctua 140mm NF-A14 industrialPPC IP52 PWM Fan (Max 3000RPM) - Umart.com.au

Buy Noctua 140mm NF-A14 industrialPPC IP52 PWM Fan (Max 3000RPM) - Umart.com.au Fast-Shipping & Pick-Up

www.umart.com.au

View attachment 4508066

So that one is over 10, no problems getting through a filter

Anything over 5 is suitable

Good luck

Click to expand...

Fan static pressure is one of the two parameters that define the performance of a fan. The other, and more common, is the volume of air the fan delivers per minute or per hour. Fan static pressure is the resistance pressure the fan has to blow against to move air in the desired direction.

For PC gamers, high airflow and high-pressure static fans are two distinct classifications. High-pressure static fans are used on radiators, central processing unit (CPU) and graphic processing unit GPU coolers, in front of hard drives, and other places where airflow might otherwise be blocked by an object. Because of their high-pressure capability, they can overcome the restrictions caused by the blockage.

In wood drying operations, kiln static pressure is not a constant and depends upon the performance of the fan chosen. For example, replacing a small fan generating 45,000 cubic feet per minute (cfm) at an estimated pressure of 0.5 inches H2O in a kiln with a larger fan rated at 60,000 cfm at 0.5 inches of H2O will not achieve 60,000 cfm. The actual air flow will be less than 60,000 cfm due to the rise in the static pressure – a situation that can cause complications in the end application.

In heating, ventilating and air conditioning (HVAC) systems, static pressure measures the effectiveness of the fan to the ducts in a particular installation. If the static pressure is too high, the HVAC unit will have to work harder to push the air through the duct work.

In all of these low-pressure situations, an accurate microelectromechanical systems (MEMS) pressure sensor with a digital output can address the manufacturing, installation verification or ongoing operation measurements.

Gardenator said:

Fan static pressure is one of the two parameters that define the performance of a fan. The other, and more common, is the volume of air the fan delivers per minute or per hour. Fan static pressure is the resistance pressure the fan has to blow against to move air in the desired direction.

For PC gamers, high airflow and high-pressure static fans are two distinct classifications. High-pressure static fans are used on radiators, central processing unit (CPU) and graphic processing unit GPU coolers, in front of hard drives, and other places where airflow might otherwise be blocked by an object. Because of their high-pressure capability, they can overcome the restrictions caused by the blockage.

In wood drying operations, kiln static pressure is not a constant and depends upon the performance of the fan chosen. For example, replacing a small fan generating 45,000 cubic feet per minute (cfm) at an estimated pressure of 0.5 inches H2O in a kiln with a larger fan rated at 60,000 cfm at 0.5 inches of H2O will not achieve 60,000 cfm. The actual air flow will be less than 60,000 cfm due to the rise in the static pressure – a situation that can cause complications in the end application.

In heating, ventilating and air conditioning (HVAC) systems, static pressure measures the effectiveness of the fan to the ducts in a particular installation. If the static pressure is too high, the HVAC unit will have to work harder to push the air through the duct work.

In all of these low-pressure situations, an accurate microelectromechanical systems (MEMS) pressure sensor with a digital output can address the manufacturing, installation verification or ongoing operation measurements.

Click to expand...

Bro,
I know because I know, not because I read it somewhere

Go with the smallest carbon filter (I like the can lite for this myself ) and have ur fan pushing into the filter

This will make it a bit less loud

U want to get a charger thing with adjustable voltage

Like
This

That way u can control ur fans speed

weed-whacker said:

Bro,
I know because I know, not because I read it somewhere

Go with the smallest carbon filter (I like the can lite for this myself ) and have ur fan pushing into the filter

This will make it a bit less loud

U want to get a charger thing with adjustable voltage

Like
This

Universal Power Adapter,30W 2000mA Universal AC/DC Adapter Switching Power Supply with 8 Selectable Adapter Tips & Micro USB Plug, for 3V to 12V 2A Household Electronics and LED Strip - 8 DC Tips : Amazon.com.au: Electronics

Universal Power Adapter,30W 2000mA Universal AC/DC Adapter Switching Power Supply with 8 Selectable Adapter Tips & Micro USB Plug, for 3V to 12V 2A Household Electronics and LED Strip - 8 DC Tips : Amazon.com.au: Electronics

www.amazon.com.au

That way u can control ur fans speed

Click to expand...

I know it doesnt work because i have tried it numerous different ways with those fans and unless its a tiny cab it wont do anything those fans are designed to cool rapidly in a small confined space, they do not move air the way a canfan or a duct fan is designed to and they are cheap as well... those fans wouldnt exhaust a 2x2 tent with a 400w hps lamp or even a 150w lamp/ballast unit for that matter it would be 90's in that little space and have stagnant air, pc fans preformance inst even measured the same as a fan designed to move air through a duct or designed to do the same thing, for one those tiny blades would have to work exponetially harder to push as much as the big blades would at the same static pressure (the pressure the fan has to overcome to blow air forward) and the cfm rating refers to the amount of air a fan can move per hour at that given static pressure. I install and design hvac systems in comercial grow rooms, hemp and cannabis... i know because i do this everyday bro

Gardenator said:

I know it doesnt work because i have tried it numerous different ways with those fans and unless its a tiny cab it wont do anything those fans are designed to cool rapidly in a small confined space, they do not move air the way a canfan or a duct fan is designed to and they are cheap as well... those fans wouldnt exhaust a 2x2 tent with a 400w hps lamp or even a 150w lamp/ballast unit for that matter it would be 90's in that little space and have stagnant air, pc fans preformance inst even measured the same as a fan designed to move air through a duct or designed to do the same thing, for one those tiny blades would have to work exponetially harder to push as much as the big blades would at the same static pressure (the pressure the fan has to overcome to blow air forward) and the cfm rating refers to the amount of air a fan can move per hour at that given static pressure. I install and design hvac systems in comercial grow rooms, hemp and cannabis... i know because i do this everyday bro

Click to expand...

See for yourself

Gardenator said:

See for yourself

Click to expand...

Well yeah, a pc fan isn't going to clear that

No disrespect!

I thought we were talking about a PC box build. I've seen all kids off little diy stuff, and yes PC fans pushing through flat filters and smoke buddies...not as effective as a big can, but it's in a tiny setup, the whole thing is inefficient (but cool af). I don't disagree that it would have trouble pushing through one of those monster cans but that's not the ask right? Looking back it's for a normal filter, which maybe means at least a 4" can not sheets.

No.

Gardenator said:

I know it doesnt work because i have tried it numerous different ways with those fans and unless its a tiny cab it wont do anything those fans are designed to cool rapidly in a small confined space, they do not move air the way a canfan or a duct fan is designed to and they are cheap as well... those fans wouldnt exhaust a 2x2 tent with a 400w hps lamp or even a 150w lamp/ballast unit for that matter it would be 90's in that little space and have stagnant air, pc fans preformance inst even measured the same as a fan designed to move air through a duct or designed to do the same thing, for one those tiny blades would have to work exponetially harder to push as much as the big blades would at the same static pressure (the pressure the fan has to overcome to blow air forward) and the cfm rating refers to the amount of air a fan can move per hour at that given static pressure. I install and design hvac systems in comercial grow rooms, hemp and cannabis... i know because i do this everyday bro

Click to expand...

Yes I don’t disagree with a thing you said, the pic proof was unnecessary, makes u look a tad insecure if anything, just saying

And as @juxt said this thread seems to be about using a pc fan instead of a big proper fan and if it can be done


So I guess we both answered OP’s question:

Not for big commercial grows like big dick @Gardenator up there (lol sherminator from American pie )
For small custom cab and yes even a 2x2 tent (proper efficient diy led ) u can just get away with it by getting a higher static pressure than 5 mm h20