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How long should I keep my fan on?

Posted by strawberryfields64 Zone 5 (My Page) on
Sat, Feb 27, 10 at 21:20

I'm starting some lupine indoors. So, I've been keeping a fan on low for a while now to help improve air circulation. Is there a certain amount of time that I should keep it on for everyday, or should I let it run all the time?

I hope this is the right topic to ask this question. I've asked it two wrong forums already, heh... -_-

Thank you!
Strawberry


Follow-Up Postings:

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RE: How long should I keep my fan on?

Let it run all the time.


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RE: How long should I keep my fan on?

I agree. I run mine all the time. I suppose it wouldn't hurt to cycle it on an off for a brief period but I prefer the steady movement of air through the seedlings.

Dave


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RE: How long should I keep my fan on?

Not to hijack, but I'm running a 400W metal halide. Should I have the fan positioned at the level of the lamp or the seedlings? I'm planning on starting the MH 2' above the seedlings.


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RE: How long should I keep my fan on?

At the level of the seedlings. The fan will simulate wind, and the "wind" will produce hardier and stockier plants.


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RE: How long should I keep my fan on?

Your HID lamp radiates light and heat much like the sun. For your seedlings they are benefiting mostly from the light and re-radiating into the air the heat that they have absorbed along with the light. The air movement from the fan provides a push against the growing seedling causing as a response a stiffening of the cells in the seedling. Many university tests have been done to show that a tree grown continually tightly staked will never develop a proper trunk to support the tree. Think of your seedling as a miniature tree! Al


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RE: How long should I keep my fan on?

Thanks for the tips!


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