veg grow box ventallation help

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lil ze

Member
i have buit a small veg box about 25" wide 20" deep and 45" tall,with a 200w envirolite inside.i am planning on putting 2 computer fans 1 for intake 1 for outtake.will this be enough oor will i need more fans.
 
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Bob Smith

Well-Known Member
lil ze said:
i have buit a small veg box about 25" wide 20" deep and 45" tall,with a 200w envirolite inside.i am planning on putting 2 computer fans 1 for intake 1 for outtake.will this be enough oor will i need more fans.
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Probably be enough, but that's dependent on the ambient temps around the box. Might need a touch more for exhaust.

BTW, your screen name is gangsta - that movie was the shit.
 
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Th3p3st24

Active Member
figure out what ur temp is with everything running before u go out and spend more money....just a suggestion
 
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mrmadcow

Well-Known Member
fans would be more effective if used to draw air out from the top.just make a hole in the bottom for a passive intake
 
del66666

del66666

Well-Known Member
get a 4 inch inline with carbon filter, i use enviros and have had same fan and filter going for 2 years without heat issues or smell, dont waste your time with computer fans.
 
redi jedi

redi jedi

Well-Known Member
Try using both PC fans to exhaust before buying a 4" inline fan...like madcow said use a passive intake
 
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lil ze

Member
del 666 y would i need a filter because this is jus my veg box there is no smell in veg, if i just put the exhaust fan with no filter this will prob suck to much air out wont it.so ure saying just put a bit ducting at the bottom this will pull in enough air for intake yea?
 
del66666

del66666

Well-Known Member
soz mate stoned as usual, well the filter dampens the sound and obviously you will need when flower, also some plants do start smelling in veg. i have a smallish space with a 4inch inline , it will be good for your plant with the amount of air it will pull and just a passive intake is needed.an inline fan only costs around 60 squid, well worth it.
 
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lil ze

Member
del66666 said:
soz mate stoned as usual, well the filter dampens the sound and obviously you will need when flower, also some plants do start smelling in veg. i have a smallish space with a 4inch inline , it will be good for your plant with the amount of air it will pull and just a passive intake is needed.an inline fan only costs around 60 squid, well worth it.
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yea thats what i was thinking jus go nna get 4" inline because i dont wanna start wiring shit up prob kill me before the weed does lol.but i will use this for the air out wat about in ?
 
del66666

del66666

Well-Known Member
just cut a hole at the bottom, make it bigger than the out and you could use fly mesh or cooker hood filter, either carbon or grease to filter the intake . lots of fresh air is going to make that plant go some.
 
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lil ze

Member
i got this light from a friend and jus checked the bpox it is actually a 125w and i think it is a blue/white spectrum light is this ok.do u think 125 w is enough for my small box will be veg about 5-6 plants in ther e ?
 
del66666

del66666

Well-Known Member
depends how big you want them, i run a 200 or 250 in a veg room 33 inch deep 22 wide 28 tall, only put 4 plants in there. what u going to flower with?
 
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lil ze

Member
i got a flower tent already its 1m sq bud box ,6oo w hps , i usually veg my seeds to about 15" roughly 6 weeks. Do u think that the 150w will get them that big in 6 weeks?
 
past times

past times

Well-Known Member
enviro light is just a big cfl right? i would think you could get away with one or two pc fans easily. my box is 26"x19"x40" with 2 55watt t5's and 4 other cfls for a total of around 180 watts. I only have one active intake pc a few inches below the light blowing longways (Basically blows the fresh air at canopy level. I then have passive outtake going out the top. temps are perfect with constant fresh air and little breeze for the girls.
 
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lil ze

Member
i think it is a cfl thats what im trying to work out , is it? do u use pc fa for ure outtake aswell or jus ductig ?
 
andyk187

andyk187

Well-Known Member
My Veg. right now runs (8) 26w cfl's and all i use is a couple $10 pc fans and cheap a/c adapters i found from old toys and portable phones laying around the attic.... my temps never go over 80... and good luck finding a quiet inline fan for under $100, yes there are inline fans, but you want one that doesn't sound like a jet engine.... and my personal opinion, but i dont think that 1 light is sufficient for 4-5 plants getting that tall. light discipates fast, after a foot that cfl's pumping 50% power if you're lucky, and if plant leaves are in the way it's even less than that. make sure and maximize your light efficiency by painting the walls white! goodluck with the grow!
 
past times

past times

Well-Known Member
i was thinking the same thing about that light. It is a lot of output for 1 bulb but the coverage still isnt the greatest. Might want to through a few more cfls in for side lighting. And if temps allow it, i would put the warm bulbs in there for the side lighting...i am a big fan of having both spectrums in veg (Mostly the blue light though).

are you fixxing your light or making it movable?
 
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