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  • 1 Post By pavel
  • 1 Post By panam

A question about fans

This is a discussion on A question about fans within the Semi Hydro / Lights / Greenhouses / Accessories forums, part of the Orchid Culture category; I have a window fan running. It is not in the wind. Actually I have ...

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  1. #1
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    Default A question about fans

    I have a window fan running. It is not in the wind. Actually I have it propped in the legs of an up-side-down bar stool so it is about the height of my windowsill.

    My question is: How far way from the windowsill should I place the fan? I have it so the air is directed away from the plants. As it is now, it is about 4' from the plants.

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    The idea behind air movement is to provide gently tumbling, buoyant air, as that prevents stagnation, and helps with the exchange of gases within the potting medium.

    Every little "puff" is a pressure change, and that helps air movememnt within the medium, but a hurricane is certainly not necessary.

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    Quote Originally Posted by raybark View Post
    The idea behind air movement is to provide gently tumbling, buoyant air, as that prevents stagnation, and helps with the exchange of gases within the potting medium.

    Every little "puff" is a pressure change, and that helps air movememnt within the medium, but a hurricane is certainly not necessary.
    Well, I don't know exactly what you mean. My fan has 2 settings, high roars and low is a bit brisk. I have the fan set so the air is drawn away from the plants so that the air is circulating, not blowing upon them. I don't want them to also get chilled, and have moved the fan to about 2' awayfrom the windowsill.

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    Ray is simply saying that gentle air circulation is all that is necessary. As long as your fan is placed so it is causing the air in the room to circulate, all is good. Some folks mistakenly assume that a fan HAS to be blowing directly on the plants in order to have "good" air circulation.

    As long as the air being pulled in from your open window is not chilly and the plants in question are warm growers, then you can have the fan directly on the windowsill. If the air is cool/chilly and your plants are cool growers like masdies or milts, then by all means put the fan on the windowsill. If your window is closed, then there is no worry whether you have the fan on the windowsill or not. Since you do not have the fan blowing directly on the plants anyway, by the time the air by a closed window "makes the rounds", it will have warmed up to room temp.

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    Thanks Pavel! I guess I am doing the correct method! As it is still too cool to open windows here.

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    Quote Originally Posted by Katherine View Post
    Thanks Pavel! I guess I am doing the correct method! As it is still too cool to open windows here.
    Jeepers - and we're running air conditioning already.

  7. #7
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    Quote Originally Posted by panam View Post
    Jeepers - and we're running air conditioning already.
    Wouldn't know what to do with A/C! 70 degrees and we are having a heat wave!

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