Pc fan?

Discussion in 'First Time Marijuana Growers' started by WickedWest, Jun 25, 2012.

  1. #1 WickedWest, Jun 25, 2012
    How much cfm would a 120mm x 1200mm x 25mm cover?
     
  2. #2 BlackWeeds, Jun 25, 2012
    Check on the fan itself, sometimes they say. If not, whats the power rating on it?
     
  3. #3 WickedWest, Jun 25, 2012
    I'm not sure how to look for the power rating but it says fan speed: 3000+10%RPM
     
  4. #4 BlackWeeds, Jun 25, 2012
    It's hard to tell with PC fans unless you buy new.. Most are around 70CFM for the 120mm fans though. I just bought a brand new one that was 76CFM
     
  5. #5 WickedWest, Jun 26, 2012
    ok because I was planning on using one as an intake would that be a good idea? I plan to use a 100cfm inline duct fan as an exaust
     
  6. #6 Bud The Med Toker, Jun 26, 2012
    Use that duct fan as an exhaust and don't put the pc fan as your intake, a passive intake is the best (created by neg pressure from exhaust fan) I would use your PC fan to blow on your plant not as an intake. Plus with an intake fan in you have any leaks any air thats blowing in will blow out the leaks, where with a sucking exhaust the leaks suck air in (reducing smell in flower) hope this helps :smoke:
     

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