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Computer fan size for stealth box

Thebanktella

Thebanktella

Well-Known Member
Yo guys
I’m going to build me a stealth box size is
60cm length
45cm width
120cm height

Wanted to know if two deep cool xfan 120mm
Fans is sufficient for intake and outlet
Or should I go 2 intake
2 outlet ??! O and I will be using a 100watt full spectrum led on the top and 4 or 6 6500k cfl on the sides as under lighting
image.jpg
 
M

Mitchician

Well-Known Member
Hey buddy, if you have 4 I'd say use them all but 3 exhaust 1 intake and power them with something lower than 12v like a phone charger, so they'll be totally silent. I use that exact fan and they're kinda loud on 12v but I can't even hear them on next to my bed on 5v, if you have something around 7-9v that would probably be a nice medium between cfm and stealth.
 
It's not oregano

It's not oregano

Well-Known Member
I used to use 2x 120mm pc fans in my stealth box as outtakes, with only passive intakes. It worked really well, until i needed to use a carbon filter, then the fans struggled to pull through it. As in REALLY struggled. I ended up having to totally redesign my cupboard to use a ‘proper’ fan instead.
Just something you may not have thought about yet. I would hate you to build something now that you find out isn’t up to it part way through a grow, when it starts to reek to high heaven.
 
M

Mitchician

Well-Known Member
It's not oregano said:
I used to use 2x 120mm pc fans in my stealth box as outtakes, with only passive intakes. It worked really well, until i needed to use a carbon filter, then the fans struggled to pull through it. As in REALLY struggled. I ended up having to totally redesign my cupboard to use a ‘proper’ fan instead.
Just something you may not have thought about yet. I would hate you to build something now that you find out isn’t up to it part way through a grow, when it starts to reek to high heaven.
Click to expand...
Actually that's very true, I failed to mention I only use them on my veg chamber because the moment you put any kind of resistance on them they're useless. Take oregano's advice and go with an inline+carbon filter right off the bat and don't worry about it again until you start smelling the funk outside your chamber I guess.
 
Thebanktella

Thebanktella

Well-Known Member
Smell isn’t a problem here by me , I’ll just run the fan right by my window blowing the little funk straight out , issue I might have is , the light coming in through it , any tips on that ?
 
coreywebster

coreywebster

Well-Known Member
Thebanktella said:
Smell isn’t a problem here by me , I’ll just run the fan right by my window blowing the little funk straight out , issue I might have is , the light coming in through it , any tips on that ?
Click to expand...
Yeah build a light trap/baffle. Its kind of like the opposite of a periscope inside a cardboard box, the idea been instead of mirrors to reflect light at an angle you have the opposite angles with flaps painted black to allow air but not light.
 
Boatguy

Boatguy

Well-Known Member
I think just 3 90 degree bends are all thats needed. If the tubing or whatever is black on the inside.
You could also discharge into a box with a couple of baffles then run the exhaust to the window from there.

Edit... I should have read the post you were quoting.
 
M

Mak'er Grow

Well-Known Member
If the inside of your tube/duct isn't reflective then just make a loop in it...or 2.
By the time its done trying to reflect the light around all the corners there shouldn't be any left.
 
Thebanktella

Thebanktella

Well-Known Member
Thanks for all the replies guys will do that soon when it comes to 12/12 time does really matter now as it doesn’t really need to be that stealthy as I live alone
 
M

Mitchician

Well-Known Member
Nice job but I'd recommend getting rid of those old fan leaves with pest damage now as they're not doing much more than providing a home for bugs. Same goes for the ones on your soil, they will also invite fungal issues. The only argument for leaving them there is to regain the nutrients from them but that plant will never live long enough to use anything from those leaves so they can only cause you problems. It's good to get rid of all old and lower growth that gets no light as it just drains energy and gives bugs a home.
Other than the bug damage your plant is in perfect health. Just noticed the nice training too, is that a mainline manifold I see forming? I see why you had to leave those leaves there now... What's that hanging up? Outdoor plant?
 
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