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Re: [Q] Lighting at Night
>
>From: Stephen Halderman <sthalder at eastman_com>
>Date: Thu, 16 Nov 95 08:22:31 CST
>Subject: [Q] Lighting at Night
>
Stephen wrote:
>I have been lurking on this list for a while, and thought I might ask a
>question. During the hours when your main lighting is off (flourescent, etc.),
>is there a lighting that can be used to view the tank that will not be used for
>photosynthesis by the plants? (Red bulbs, etc?) What do people use for this
>purpose?
>
The lamp absolutely tailor made for this purpose is the plain old "cool" white
flourescent tube. It puts almost all its energy where *your* eye is most
sensitive, and right between the red and blue humps in the photosynthesis action
curve. It will cause just a little photosynthesis, but way low compared to the
visibility it gives.
A red lamp is right near the bigger hump in the curve, and would give 10% the
visibility and about 300% the photosynthetic effect of a greenish lamp such as a
cool white.
I'm in the process of writing a new "Aquamyth" on this very subject, so keep
your eye out for it.
Wright
--
Wright Huntley (408) 248-5905 Santa Clara, CA USA huntley at ix_netcom.com