RE: [AGA Member] Re: fish/plant light -- or - Have you got lots o f options or what?

["S. Hieber" <shieber@yahoo.com>]

You give up on keeping the gap, havee flatter instead of
parabolic reflctors, and lose a lot of the light. That's
one reason T5s can have higher effective outputs in more
applications. Point source lights take that advanctage even
farther, althought the round "spot-light" dispersion
doesn't suit many aquarium applications.

Wherever you could stuff a lot of 4' T12s, you could
probably get more light using T8s, or about as much light
using less electricity -- assuming you use compaably
matched ballasts.  And T8s are pretty cheap even in the US.

Scott H.
--- Livay Aviel-R51374 <Aviel.Livay@motorola.com> wrote:
> Steven,
> 
> So the only question is how could you cram 8 T12s into a
> 19.5 inch wide hood when the width of a reflector is 3"
> and you want some additional gap in order to close the
> hood.
> 
> Aviel.
> 
> -----Original Message-----
> From: owner-aga-member@thekrib.com
> [mailto:owner-aga-member@thekrib.com] On Behalf Of Steven
> Pituch
> Sent: Tuesday, March 16, 2004 4:33 PM
> To: aga-member@thekrib.com
> Subject: Re: [AGA Member] Re: fish/plant light -- or -
> Have you got lots of options or what?
> 
> Hi Aviel,
> 
> You may have a better solution in Israel with the T5s. 
> My NO setup is low
> tech.  Is your tank 8 feet long?  If I was on a budget
> here in the USA I
> would think of making two separate 4 foot long suspended
> enclosures.  I
> would put 8 T12 bulbs in each enclosure.  That would
> bring it up to 3.2 W/G.
> 
> The bulbs are actually 6500K, 84CRI, 20,000 hour, 2325
> lumens each, Philips
> Alto 812447.  Here in bright Corpus Christi, Texas in my
> sun room at high
> noon the lamp color is perfectly neutral (not blue).  In
> the second URL
> reference in my previous email the first picture shows
> one of the bulbs to
> be an expensive ($8) 5000K Philips bulb.  In this picture
> the color of this
> bulb is very brown compared to the 6500K bulbs.  I have
> 4000K bulbs that
> look absolutely terrible in an aquarium (they are very
> yellow).  I would
> hate to see what a 3000K bulb would look like.
> 
> I think the bulbs I am using are conservatively rated.
> After one year (4400
> hours) , there is no darkening of the ends of the bulbs. 
> I don't think they
> degrade as much as some bulbs.  There are others on the
> list that can
> comment on light falloff with age, but I think the rated
> output is not at
> startup, but after a few months of use, and quite stable.
> 
> Good luck with the tank.
> 
> Steve Pituch
> 
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=====
S. Hieber
-  -   -   -   -   -   -   -
Takashi Amano and More at
the AGA Annual Convention
Nov 12, 13 & 14, 2004
Crystal City, Arlington, Virginia, USA

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