Ventilation 101 - Page 3 - Growroom Designs & Equipment - International Cannagraphic Magazine Forums

GrüneErd · 03-10-2009, 04:01 PM

hey red, why is it do you think that i can't even cool 300w of CFL's in a 2.5'Lx4'Wx8'H closet with the door open and a 340cfm panasonic whisper for exhaust (and sometimes a stanley blower for intake as well as the door open)?
i know ventilation and cooling lights are different, but man, i've tried everything. i have a 400w with a hood and everything, that just gets WAY too hot to the point that it's ridiculous, so i've NEVER used it.
i've never understood how to cool these lights and as a result can't get big buds, though i've had many harvests, they're just small.
i see people using MORE than my 400w's in the same size with no problems. i just would like to do that as well.
any help from ANYONE would be great.
peace

03-10-2009, 04:18 PM

man running cfls all you need is a 8" floor fan from hd or lowes...it will kewl the closet for sure. I kewl 3000w with one bringing ac air from living room

Blizztech420 · 03-10-2009, 05:58 PM

hmm to sound like a nub...would you by any chance know how to rig a computer fan to run off a computer power supply..i remember a while ago i found a thread that told ya how i just cant find it

, so i though i would ask in this thread, stonerpride

03-10-2009, 10:09 PM

Quote:

Originally Posted by GrüneErd

hey red, why is it do you think that i can't even cool 300w of CFL's in a 2.5'Lx4'Wx8'H closet with the door open and a 340cfm panasonic whisper for exhaust (and sometimes a stanley blower for intake as well as the door open)?
i know ventilation and cooling lights are different, but man, i've tried everything. i have a 400w with a hood and everything, that just gets WAY too hot to the point that it's ridiculous, so i've NEVER used it.
i've never understood how to cool these lights and as a result can't get big buds, though i've had many harvests, they're just small.
i see people using MORE than my 400w's in the same size with no problems. i just would like to do that as well.
any help from ANYONE would be great.
peace

Using the chart, you need 100-110 CFM to cool either the 300W of CFL or the 400 W HPS. There must be something really blocking your airflow from the fans closet. Are you running the air into a scrubber?

Some pics of your closet would help.

03-10-2009, 10:13 PM

just use power supply from old computer it has plug and everything for both wall and fans.....been years since i used anything that small but know it works

03-10-2009, 10:14 PM

Quote:

Originally Posted by Blizztech420

hmm to sound like a nub...would you by any chance know how to rig a computer fan to run off a computer power supply..i remember a while ago i found a thread that told ya how i just cant find it

, so i though i would ask in this thread, stonerpride

Connect the fan to Yellow +12V and one of the Blacks which is Ground. If the fan doesn't run or runs reverse, then swap the leads.

The red wire is +5V and can be used for running the fan at a lower speed.

Old MacDonald · 03-10-2009, 11:45 PM

Lovin the info on here! Makes the mad scientist go cuckoo for co-co nugs!

808kahumai · 03-11-2009, 12:13 AM

Redgreenry: I am dreaming of a set up that can be connected through the normal a/c unit with all the extra ducting in the atic and to have the outflow out the vent through the roof as well. 12x12 room 9' tall with two 600watt lamps. A proper room with a gardening table, bench, and shelves. Any ideas? I didn't see anything posted about this kind of a set up, perhaps I missed it. Can this be done? Thanks!

hoosierdaddy · 03-11-2009, 12:42 AM

Very nice job, red. Well done.

GrüneErd · 03-11-2009, 01:48 AM

red, thanks for the info. i have a thread about this i just started.
basically, i'm scrapping the cfl's and would like to know how YOU (or any reader) would set up a grow room with the items i have listed on there.
i've given up on my ideas and am opening my mind to all of yours here, because there's definitely some pro's out there that can help i'm sure.
and ALL i wanna do is grow big buds, which at this point is only lacking decent cooled light.
the thread is here:
https://www.icmag.com/ic/showthread.p...=1#post2198957
thanks red, your info is helpin me get a feel that what i have is adequate, i'm just not using it correctly apparently.
peace

03-10-2009, 04:01 PM	#21
GrüneErd Member Join Date: Jul 2007 Posts: 284	hey red, why is it do you think that i can't even cool 300w of CFL's in a 2.5'Lx4'Wx8'H closet with the door open and a 340cfm panasonic whisper for exhaust (and sometimes a stanley blower for intake as well as the door open)? i know ventilation and cooling lights are different, but man, i've tried everything. i have a 400w with a hood and everything, that just gets WAY too hot to the point that it's ridiculous, so i've NEVER used it. i've never understood how to cool these lights and as a result can't get big buds, though i've had many harvests, they're just small. i see people using MORE than my 400w's in the same size with no problems. i just would like to do that as well. any help from ANYONE would be great. peace __________________ ______________________________ G I Y... Everybody Quit Trippin.
	Quote

03-11-2009, 12:13 AM	#28
808kahumai I will be your nurse tonight. Is there anything you need right now? Join Date: Feb 2009 Location: Big Island Posts: 187	Redgreenry: I am dreaming of a set up that can be connected through the normal a/c unit with all the extra ducting in the atic and to have the outflow out the vent through the roof as well. 12x12 room 9' tall with two 600watt lamps. A proper room with a gardening table, bench, and shelves. Any ideas? I didn't see anything posted about this kind of a set up, perhaps I missed it. Can this be done? Thanks! __________________ Aloha nui loa!
	Quote

03-11-2009, 01:48 AM	#30
GrüneErd Member Join Date: Jul 2007 Posts: 284	red, thanks for the info. i have a thread about this i just started. basically, i'm scrapping the cfl's and would like to know how YOU (or any reader) would set up a grow room with the items i have listed on there. i've given up on my ideas and am opening my mind to all of yours here, because there's definitely some pro's out there that can help i'm sure. and ALL i wanna do is grow big buds, which at this point is only lacking decent cooled light. the thread is here: https://www.icmag.com/ic/showthread.p...=1#post2198957 thanks red, your info is helpin me get a feel that what i have is adequate, i'm just not using it correctly apparently. peace __________________ ______________________________ G I Y... Everybody Quit Trippin.
	Quote

03-10-2009, 04:18 PM	#22
moses224 Guest Posts: n/a	man running cfls all you need is a 8" floor fan from hd or lowes...it will kewl the closet for sure. I kewl 3000w with one bringing ac air from living room
	Quote

03-10-2009, 05:58 PM	#23
Blizztech420 New Member Join Date: Jan 2009 Posts: 13	hmm to sound like a nub...would you by any chance know how to rig a computer fan to run off a computer power supply..i remember a while ago i found a thread that told ya how i just cant find it , so i though i would ask in this thread, stonerpride
	Quote

03-10-2009, 10:13 PM	#25
moses224 Guest Posts: n/a	just use power supply from old computer it has plug and everything for both wall and fans.....been years since i used anything that small but know it works
	Quote

03-10-2009, 11:45 PM	#27
Old MacDonald New Member Join Date: Mar 2007 Location: on the back 40 Posts: 12	Lovin the info on here! Makes the mad scientist go cuckoo for co-co nugs!
	Quote

03-11-2009, 12:42 AM	#29
hoosierdaddy Banned Join Date: Mar 2008 Location: On a hill in a holler Posts: 4,900	Very nice job, red. Well done.
	Quote