Stopping Light Emission?

Discussion in 'First Time Marijuana Growers' started by Vegi, Oct 20, 2014.

  1. Does anyone have a way or idea to stop light escaping for my exhaust fans?
    I have carbon material but the light still escapes?
    Any help would be appreciated.
    It's two PC fans I'm using for the exhaust

  2. Get a 90 degree PVC elbow and paint the inside black. Attach it to the exhaust on your fan.

    You gotta pic?
  3. Build a labyrinth box easy and cheap just a can of black spray paint and a cardboard box for a low budget

    Sent from my iPad using Grasscity Forum
  4. #4 GreenHackTM, Oct 20, 2014
    Last edited by a moderator: Oct 20, 2014
    Is this on your server case?
  5. Thanks guys.

    Na, not my server case, its the internal greenhouse I have.

    I think I fixed it with a DIY 90 bend thing I did with some cardboard. Seems to have reduced it dramatically

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