Fan and filter for micro grow - 9cft/9cfm

[different_trip]

Hello everyone.

Im planning a micro grow and Im stuck. I pretty much bought ventilation-equipment, going with the minimum recommended on "stores" and ended up buying stuff I have no use for what so ever.

The grow Im trying to do is a micro grow, a stealth one. Its a mother/clones setup using two small spaces.

Reading around Ive come up with that you...
- Want 1 airchange per minute as a max to avoid stress
- If using a carbon filter, almost account for 50% less moving air

Ive already bought an simple 66cfm inline fan that sounds like a jet and after that bought dimmers - which brought a humming to the engine, and didnt do much about noise - back to square one.

What would you recommend for such a small space?

Ive looked at DIY carbon filters with PC-fans as some of them are designed to pull thru simple screens filtering out dust from a PC - however a carbon filter is giving alot more resistance.

This leads me to a push-pull-setup, but if I have to add pre-filters I dont think it will work anymore.

Do you have any tips or ideas I could work from? This is really de-moralizing having to fail upon fail.

Reading one thread about PC-fans saying that they are totally worthless and them seeing succesful grows using PC-towers and so on.

Please, shine on me.

Thank you,

 

[FishmanK]

Id use the computer fans and old pc power supply
modular - cheap
mount fans on thin plywood/paneling w screws and a hole cut
maybe just some cheese cloth or felt as a prefilter

hardest part of stealth is smell
there are filters for central furnaces that get more effective as the system runs

Poly Propylene filters develop an electrostatic charge with air movement, which improves their efficiency, so I like to use them.

 

[FishmanK]

for a tiny system, a spent carbon filter might still work and would be super cheap off CL
just have to find a place to hide it and get duct to it

 

[different_trip]

Thank you for som heads up,

Im thinking of a simple push-pull with carbon in between, some kind of setup that I cant insert from outside the tent and be able to change carbon quickly when I need too.

Ive seen some stats on Arctic Cooling F12, not the best but it works horizontally and it still pushes 24cfm thru a radiator (Corsair H80). I know carbon is going to give resistance but as it is a small space - even half of that would be over 1 change per minute.

How thick layer would you go for? Its a 120mm fan, how about 2 inches or something like that?