Re: Aquatic Plants Digest V1 #65

>From: Earle Hamilton <ehami at sunny_ncmc.cc.mi.us>
>Date: Sat, 11 Nov 1995 16:47:02 -0500 (EST)
>Subject: Halogen lights
>I suspect the subject has been brought up before so I will apologize in
>advance for replowing old ground but while we are talking about light
>sources, what about halogen lights?  They can be dimmed, cost very little
>and are a very very concentrated source of light.  The main down side I
>can think of is heat and I have no idea what the lumens/watt numbers are.


There's a post in the Krib archives from someone who successfully grows
aquatic plants using a high-powered halogen light.  He speculates that the
lamp makes up in intensity for lack of ideal spectrum. He also mentions
that the light generates a LOT of heat and he can feel it warming his room.

Halogens are more energy-efficient (more lumens/watt) than regular
incandescents, but less energy-efficient than fluorescents. They also give
off a very beautiful, sparkling light. At least I think so.

Greg. Tong
San Francisco, CA, USA
gtong at sirius_com

"Every infinity is composed of only two halves."