[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
RE: [APD] Help With My New Tank!! -- or - Bravely into the Shadows
Generally, LED's (light emitting diodes) provide light at a single
wavelength - they're typically monocromatic.
Providing the spectrum required by a planted tank would be a very
expensive exercise involving many different leds using many different
doping agents in their construction.
I'm certain you could construct a hood using LED's but my bet is that it
would be far more expensive than using standard discharge lighting such
> -----Original Message-----
> From: aquatic-plants-bounces+graham=peachy_org at actwin.com
> [mailto:aquatic-plants-bounces+graham=peachy_org at actwin.com]
> On Behalf Of Shalom Levytam
> Sent: Friday, 6 August 2004 5:03 PM
> To: aquatic plants digest
> Subject: Re: [APD] Help With My New Tank!! -- or - Bravely
> into the Shadows
> 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:
> --- 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
> > 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
> > _______________________________________________
> > Aquatic-Plants mailing list
> > Aquatic-Plants at actwin_com
> Do you Yahoo!?
> New and Improved Yahoo! Mail - Send 10MB messages!
> Aquatic-Plants mailing list
> Aquatic-Plants at actwin_com
Aquatic-Plants mailing list
Aquatic-Plants at actwin_com