Question
What is the SPECIFIC color spectrum you use for artificial light?

Answer
Hi Richard,

With fluorescent lights we use 6500K (Daylight) in CFL's and 4100K (Cool-White) in standard T-12 fluorescent tubes.  6500K is the preferable color temperature, but with carnivorous plants, light intensity, lumens, is most important.  You can have a desired spectrum, but if the light isn't bright enough, it will make little difference.

With our HID lights we use Metal Halide, which is 4000K.

Good Growing!

Jeff Dallas
Sarracenia Northwest
http://www.cobraplant.com