RE: [plant_list] [APD] halogen lighting for aquarium

["S. Hieber" <shieber at yahoo_com>]

They burn a little hotter than standard incandescents so
they put out a little more in the higher energy, blue end
of the spectrum and seem a bit whiter than standard
incandescents which are heavily on the red end compared to
fluorescents and Metal Halides.

Perhaps you are thinking of some of the arc bulbs, like the
sodiums, which are way over on the yellow part of the
spectrum. som metal halides have a yellowish cast that
increases with the use of the bulb.


--- Gregg <GSTEARNS at neb_rr.com> wrote:

> The problem is that halogen bulbs produce a very poor
> plant spectrum, and
> also cast a very yellow light. 
> 
> 
> --
> Gregg
> 
> 
> -----Original Message-----
> From:
> aquatic-plants-bounces+gstearns=neb_rr.com at actwin.com
>
[mailto:aquatic-plants-bounces+gstearns=neb_rr.com at actwin.com]
> On Behalf Of
> Steve Pushak
> Sent: Thursday, September 09, 2004 11:50 AM
> To: APD
> Subject: [plant_list] [APD] halogen lighting for aquarium
> 
> As general diffuse lighting for an aquarium, a
> fluorescent lamp would be
> more efficient. If you need to focus a relatively small
> wattage onto a small
> area, then wouldn't a small halogen with a built-in
> parabolic reflector be
> better? You can actually focus and direct the light with
> these and getting
> the right amount of light onto a small area, such as a
> patch of foreground
> Glossostigma seems like an idea.
> 
> I've also used external halogen lamps for photographing
> aquariums. I mounted
> them temporarily to the front and side so that there were
> no reflections and
> so that "invisible" scratches in the glass don't show up.
> There's no reason
> a display tank cannot also use lights mounted in unusual
> positions. Lighting
> serves two purposes: a) for the plants to grow b) for
> seeing or
> photographing the plants.
> 
> I find it hard to believe that nobody else has tried
> this!
> 
> Steve
> 
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