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 

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 Huntley (408) 248-5905 Santa Clara, CA USA huntley at ix_netcom.com