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Are my CFM calculations right?

Discussion in 'Grow Room Design/Setup' started by newinhere, May 5, 2011.

  1. This is my first grow and I just want to make sure I'm ordering the right gear.
    My grow is 5'x4'x6' (120cubic feeet). My hood is cooled with a separate fan. I am only interested in ventilation requirments......so....
    I want to order a 4" sunleaves windtunnel (200cfm) to pull air through a 6"x16" phresh filter (400cfm). Will this do the trick? or should I be looking at something different? Any advice is greatly appreciated. Thanks.:eek:
     

  2. That should do just fine. But 6"x16" might be a problem as that filter sounds like it is designed for a 6" Fan.
     
  3. Could I purchase some type of adapter to transition from the 4"fan to the 6" filter or simply look for a 4" filter? Thanks Bohbo.
     
  4. I just found a 4" phat filter that is listed as 350CFM. Are certain carbon filters better than others in your opinion?
     

  5. I just made my own, never purchased one. (see my sig, that is a 4" filter)
     

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