Re: [APD] Help With My New Tank!! -- or - Bravely into the Shadows

[Shalom Levytam <shalominc at yahoo_com>]

Thanks everyone again for providing me with all this
information.

Now I know this is a kinda crazy question; but since
you mentioned it...
How many white LEDs would be required to provide
enough light for my tank?  I know 3 LEDs provide one
watt of output but that is about all...

These LEDs are really cheap (50 for 15bucks)  - I
thought it might be interesting to try making a hood
with a grid of these.  I have a degree in compsci and
my friend has one in compeng.  I'm sure we can rig
something up :)

The other option I am considering is using a few of
the 13watt cf tubes from ah.

I have already laid down the soil and sand into the
tank.  I'll try to post my pain or happiness as it
occurs.

In case anyone is interested I have posted my DIY
Stand build here:
http://www.simplydiscus.com/forum/index.php?board=19;action=display;threadid=20129;start=new

Shalom

--- Bill Wichers <billw at waveform_net> wrote:

> ----- snip 8< -----
> There are several primary types of lights around,
> and those are 
> incandescent lights (with filaments), fluorescent
> lights (which use a 
> primary light source of one wavelength to stimulate
> the emission of other 
> wavelengths from one or more phosphors), HID (High
> Intensity Discharge, or 
> "arc") lights (which generate an electric arc --
> basically a big and 
> continuous spark -- in a rarified atmosphere), and
> solid-state lights (LEDs).
> ----- snip 8< -----
> 
> I left out LEDs in my last post! For the sake of
> completeness I wrote this 
> part anyway:
> 
> LEDs are solid-state emitters that operate on an
> atomic level, except for 
> the white LEDs which are currently phosphor-based
> like fluorescent lights 
> (they use a blue (silicon carbide) LED to light a
> phosphor that then adds 
> in some other wavelengths to give a white light).
> There are some new white 
> LEDs being working on that don't use a phosphor, but
> not too many are 
> commercially available yet. LEDs are very efficient,
> and last a *very* long 
> time, but are not currently of much use for general
> aquarium lighting due 
> to the high cost to build a fixture sufficient to
> light a mid- to 
> large-size tank. Eventually we should see more
> economical LED-based 
> aquarium lights, but that is probably several years
> away yet.
> 
>       -Bill
> 
> 
> *****************************
> Waveform Technology
> UNIX Systems Administrator
> 
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