Well, Jerry, blue light is 2,100 Kelvin - not 21k or 21,000k.
An explination of Kelvin Temperature and where our 5500K Life-Lite lamps measure on the Kelvin Temperature scale

While your intentions may have been good, your information, or at least the way you wrote it, was not accurate. ...and the only thing I have to go by is what you wrote, isn't it?

PeaCe :smokin:
PharmaCan Reviewed by PharmaCan on . which bulb is superior which of these bulbs are better Grolux 400w Dual Spectrum Sunmaster 400w Son T Plus Rating: 5