Should I run my vent & oscillating fans 24 hours a day in my grow cabinet thank for any reply .

I dont run my fans when the lights are off...

It saves on elecy

But some people do run 24/7 guess its up to you

My fans are never off. good air circulation is needed even when the lights are off.

i have the same question about leaving the fans on 24 hrs becuse i want it cool in my cabinet but i dont want humidity to to be all gone.i havent built my cabinet yet but was just wondering if anyone would have any suggestions.i guess when the time comes ill just experiment with a 24 hr day and see if thats what i want.if not then ill try putting a timer on on exaust and see if my results are better.

p.s.-could i pull off useing a pc fan for and exuast on a 250 mh conversion and hps light in a cabinet that hold about 4 to 6 plants.maybe 3 by 2 by 5 1/2

i'm having problems trying to ventilate a closet with no windows...........

My fans never turn off.....Keeps the stalks strong and the air moving....

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Everything I read and say on this sight is for entertaiment purposes only. I have never grown or plan to grow marijuana, my sparse knowledge comes from what i have watched and or read on this and other sights on the internet.


First harvest - 26.5 pounds - Grown with 2 flashlights and a picture of the sun. 14.95 plus shipping for a how to video.
See BIGMIKE13's thread for complete details.

The fans also keep the air moving, which prevents mould, gnats etc. Tiny little insects do not like wind, as their little bodies get thrown all over the place. ha ha ha ha ha.

keep mine on 24-7 however, temp does drop.

okay so in a grow cabinet large enough to hold 6 plants i should leave the fans on 24rs.That means my exuast and my osciallating fan,so were would the temps range from? Because i have a 250w mh conversion and hps but i im kinda thinking about getting a 2 foot 8 bulb t5.Just so i can save some money and not buy a exuast fan just a simple pc intake fan.From what i hear there pretty good for begginers,stay pretty cool and produce some good sized bud.Any opinions if this would be a better choice or should i just stick with the 250 and buy a active air exaust fan for about a 100$ and suck it up.

Suck it up. that's my vote... if you can, do... if you can't, make do.