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Re: Lights (was Re: Hello out there?????)

Square Foot Gardening List - http://myweb.flinet.com/~gallus/sqft.html

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Thanks Ron- a lot of great info-am printing and mulling over it and some
other light stuff in the archives.-Teri
----- Original Message -----
From: Ronald E Menold II <menoldre@va.prestige.net>
To: Square Foot Gardening List <sqft@listbot.com>
Sent: Sunday, February 18, 2001 7:04 AM
Subject: Lights (was Re: Hello out there?????)


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> > Hi! My email has been strangely quiet. Did I inadverdently unsubscribe
myself , get kicked off for being too gabby ,or are you all down with the
flu? I am still waiting to hear if I can use a halide light( use in
aquariums for tropical fish) to light a very small shed or closet as an
> alternative to grow lights. Where have you all been? Did you fall alseep
reading your seed catalogs?.........-Teri
> >
>
> Teri:
>
> This has been said quite a few times on the list but as long as the
> light is physically close to the plants it shouldn't make too much of
> a difference what type of light you use.  I think those halide lights
> have a funny spectrum, but so do fluorescents.  Basically the best
> approximation to sunlight that you can get is a regular tungsten
> bulb (incandescent) with a blue filter on it.  They sell these filters in
> optical shops like Edmund Scientific.  The thing about incandecents
> is that they are hot and come in bulbs not tubes so it takes more of
> them to get an even distribution of light.  If you do want to use a
> point source of light for all of your plants, I think someone else
> mentioned it, but rotate your trays around so they see the light from
> all different angles, that way you won't have crooked plants leaning
> to one side.  Also remember, again also mentioned, is that the light
> intensity falls off as a square of the distance, that means if your
> neighbor's plants have the same light source 1 inch above the plants
> and you have yours 16 inches above the plants that your neighbor
> is supplying 16*16 or 256 times more light to the plants.  So believe
> everyone when they say, keep the light close to the plants.
>
> I hope that this helps
>
> -Ron
> menoldre@va.prestige.net
> USDA Zone 7a
>
>
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