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Re: [APD] Re: Lighting temps
Predominantly blue but loss of blue didn't affect total
output? So the loss of the blue end was just a color
shift? That's one of the complaints I've most often heard
about halides. Holds for fluorescents, too?
sh
--- "whenshaw.freeserve.co.uk" <w at whenshaw_freeserve.co.uk>
wrote:
> Hi,
>
> The answers to your lighting questions can be found on
> Sanjay Roshi's web site. I
> don't have the URL, but if you do a search on Sanjay and
> lighting, it should come up.
> He has done hard research on lights( metal halide) and
> the amount of light given out
> when used with different ballasts. The outcome is very
> interesting. His work was done
> with marines in mind, but it equally applies to planted
> tanks. The surprising results
> were that the higher temp of the bulbs gave out
> predominantly more blue, which
> faded over time i.e. less blue light was emitted after 10
> months, however the overall
> performance of the bulbs light output was relatively
> unaffected and as such wasn't
> worth replacing. I recommend you visit his site and see
> for yourself.
>
> Tim Henshaw
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>
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