Fan on/off during dark of 12/12?

rocpilefsj

rocpilefsj

Misguided Angel
I like to keep mine on to ensure that my girls are getting constant fresh air, they need it even if the lights are off.
 
charface

charface

Well-Known Member
Depends on which fan and your needs. I leave my exhaust on 24 hrs a day. I have 1 room fan that goes off when the
light goes off and another that gently moves air around 24 hrs.
 
S

SSHZ

Well-Known Member
It's more important to keep the exhaust on at night to reduce the humidity, which build up in the dark period. Fans are helpful too, but not as effective.
 
Barrelhse

Barrelhse

Well-Known Member
I leave the fan on 24/7. It reduces the risk of budrot and keeps the leaves from getting swamped by the gases they exude.
 
BlueBalls

BlueBalls

Well-Known Member
I keep the oscillating and exhaust fans on 24/7.
The exhaust fan I have hooked to a Titan Mercury 4 so it slows down a bit during the dark cycle when the temperature drops.
 
missnu

missnu

Well-Known Member
everything for my grow goes on and off with the timers, unless I am running my cloner..but no, I don't use a fan in the dark period
 
marc88101

marc88101

Well-Known Member
drive said:
off let them rest they don't want to hear that racket all night
Click to expand...
Huh???....leave all fans on 24/7 throughout the entire grow..your plants need the fans for a few reasons..fresh air exchange and the wind on them help build a stronger structure..
 
polyarcturus

polyarcturus

Well-Known Member
doesn't matter, really you should leave the fans on to exhaust the gas they exude and lower the temps to help them flower. i turn off my oscillating and leave my exhaust on at night.(actually it only come on 3x at night for about 2 hours ea.)
 
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