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What size inline fan will i need ????

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forums; I HAVE A 1.2x1.2x1.8 GROWTENT IV GOT 80 CM PARABOLIC REFLECTOR WITH 400 HPS A 3 INCH INLINE TT FAN ...
  1. 06-21-2012, 08:58 AM #1
    DontSnitch
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    Question What size inline fan will i need ????

    I HAVE A 1.2x1.2x1.8 GROWTENT IV GOT 80 CM PARABOLIC REFLECTOR WITH 400 HPS A 3 INCH INLINE TT FAN AND A 6 INCH OUTAKE FAN... TEMPRATURESR GETTING UPTO 90 EVEN THOW THE PLAMTS DON LOOK UNHEALTHY BUT IM WORRYING IT WILL GO EVEN HOTTER WITH THE SUMMER COMING UP ANY SUGGESTIONS TO GET TEMPRATURE DOWN I WOULD REALLY APPRECIATE UR ANSWERS ...THANKS ALOT
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  2. 06-21-2012, 10:07 AM #2
    sky rocket
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    [QUOTE=DontSnitch;7603334]I HAVE A 1.2x1.2x1.8 GROWTENT IV GOT 80 CM PARABOLIC REFLECTOR WITH 400 HPS A 3 INCH INLINE TT FAN AND A 6 INCH OUTAKE FAN... TEMPRATURESR GETTING UPTO 90 EVEN THOW THE PLAMTS DON LOOK UNHEALTHY BUT IM WORRYING IT WILL GO EVEN HOTTER WITH THE SUMMER COMING UP ANY SUGGESTIONS TO GET TEMPRATURE DOWN I WOULD REALLY APPRECIATE UR ANSWERS ...THANKS ALOT [/QUOTE

    Rule of thumb, 200cfm for every 1000 watts of lights. So 160 cfm inline fan would be good to "pull" air out of your grow room.
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  3. 06-21-2012, 10:10 AM #3
    dank smoker420
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    are those in feet or meters or yards? if it is in feet i have a tent a little bigger than that and use a 188cfm duct fan that works good. might look into a cooltube with passive intake and a passive intake for air flow in the tent as well. a cool tube would probably run you just as much as another fan.
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  4. 06-21-2012, 10:43 AM #4
    sky rocket
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    Quote Originally Posted by dank smoker420 View Post
    are those in feet or meters or yards? if it is in feet i have a tent a little bigger than that and use a 188cfm duct fan that works good. might look into a cooltube with passive intake and a passive intake for air flow in the tent as well. a cool tube would probably run you just as much as another fan.

    Cfm is cubic feet per minute
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  5. 06-21-2012, 12:08 PM #5
    DontSnitch
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    1.2 metre squared by 1.8 high

    Where will i find the cfm levels on my fans??
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