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    • #10966
      Troy Horn
      Participant
      Points: 120

      Hi All,

      I’m a first time grower and recently purchased a grow tent kit.  So I have the inline fan set up and also bought an oscillating fan. I was just reading an article about air circulation and it repeated several times to make sure I connect an “air intake” fan at the bottom of my tent. This was the first I’ve heard of this, so my question is, “do I need to add this fan to my set up if I already have the carbon filter, 4” inline fan, and an oscillating fan? Again, I’m a rookie so if anyone can provide some clarification it would be greatly appreciated.

      Thanks in advance,

      Troy

    • #10988
      Spider Farmer
      Keymaster
      Points: 1,772

      Hi Troy,

      Congratulations on starting your grow journey! Regarding your question about adding an additional intake fan to your setup, you’re actually good to go with what you have. The combination of your carbon filter, 4″ inline fan, and oscillating fan should provide adequate air circulation within your grow tent.

      So, no need to worry about adding an extra intake fan. Your current setup should suffice to maintain proper air circulation and ventilation in your grow tent.

    • #11167
      canonballs
      Participant
      Points: 129

      I have the 2×4 grow tent kit and had the same exact dilemma.

      currently closed all intakes and just have the 4” in line fan and ducting out of one of the air vents all other intakes have been tightly bound using the attached toggles.

      currently have tent walls which are bellowing out which I beleive to mean I have positive pressure. But a total noob so working on assumptions. Any advice or clarification gratefully received.

      thanks

    • #11184
      Wild-Viking-and-the-pack
      Participant
      Points: 117

      Hey

      As long as the environment (vpd) is in a good range you are ok. Second fan can be used to be able to control the vpd but it is not needed in most cases. Happy growing ?

    • #12336
      Allen Joyce
      Participant
      Points: 107

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    • #12415
      Alex-Arafat
      Participant
      Points: 760

      Welcome to growing! You don’t need an intake fan if your inline fan is creating enough negative pressure (walls sucking in slightly = good airflow). That said, I learned airflow the hard way—my first grow got as steamy as a granules for hot tub spillover because I skipped passive intake vents! Now I use the oscillating fan low near seedlings and keep my tent flaps slightly open at the bottom (like how you’d balance granules for hot tub pH—small adjustments matter). Watch those leaves; they’ll tell you if airflow’s off!

    • #12688
      Carroo
      Participant
      Points: 112

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    • #12771
      Brenard-J.-Hawkins
      Participant
      Points: 109

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      Alex-Alex
      Participant
      Points: 119

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    • #19044
      Jay-AReddick
      Participant
      Points: 114

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    • #54700
      Patrick-Edman
      Participant
      Points: 118

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