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Re: Aquatic Plants Digest V3 #798

At 03:48 PM 1/23/99 -0500, you wrote:
>Odd. My perception of the GE Super Daylights is that they are a whiter/bluer
>bulb and the Chromas 50s a warmer (somebody mentioned orange?) bulb. So by my
>perception of the color of each bulb, the Super Daylights _should_ have
>produced a more compact growth (they didn't) and the Chroma 50s taller growth
>(the space 'tween nodes has decreased dramatically)? 

That is correct. The "super daylight" (SPX65) has a big spike in the
blue end of the spectrum. The C50 is much closer to a flat spectral
output with all wavelengths (=colors) being represented.

But, all things are relative, and in comparison, the C50 will
look less blue. Now, hold it next to a cool white or warm
white or (especially) a gro lux and it will look *quite* blue.

Richard J. Sexton                                         richard at aquaria_net
Maitland House, Bannockburn, Ontario, Canada, K0K 1Y0       +1 (613) 473 1719