Computer fan size for stealth box

[Thebanktella]

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

 

[Frank Nitty]

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
View attachment 4406410

I LIKE IT,I LIKE IT!!!

 

[Thebanktella]

I LIKE IT,I LIKE IT!!!

You think 2 will be enough or you think I need 4

 

[Frank Nitty]

You think 2 will be enough or you think I need 4

4 would be cool...

 

[Tim Fox]

You think 2 will be enough or you think I need 4

i think 2 will be enough

 

[Mitchician]

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]

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.

 

[Mitchician]

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.

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]

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]

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 ?

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.

 

[Mitchician]

Hey how's the progress with your stealth cabinet? Have you made that light trap yet? You should post some pics of your build

 

[Thebanktella]

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.

Any pics or ways to do it please help

 

[Boatguy]

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.

 

[Thebanktella]

Hey how's the progress with your stealth cabinet? Have you made that light trap yet? You should post some pics of your build

Will post shortly

 

[Mitchician]

You could even just use a cardboard box with dividers in it like this...

 

[Mak'er Grow]

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.

 

[coreywebster]

Any pics or ways to do it please help

You could even just use a cardboard box with dividers in it like this...
View attachment 4412725

This is the basic principle Thebanktella, but if you change the angle of the dividers so it reflects toward the in or out rather than straight it works better and still allows air to move passively.

 

[Thebanktella]

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

 

[Thebanktella]

Sorry for late reply guys but here you go

 

[Mitchician]

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?