Originally Posted by they call me bruce
salmon &Schneeball does a putting them on a dimmable driver with a pot make a difference in k rating?
No, a dimmable driver just lets you control output. Has nothing to do with the K rating of the leds.
You could (and I have) run different color leds on different drivers allowing you to fine tune the color you want. The fixture I'm working on at the moment goes from about 3,000K to 20,000K by playing with different color leds running on separate drivers.
No one really mentions it but instead of just say going with all cool white leds, you get a much better result using many different colors.
When you think about the color spectrum analysis from a florescent tube, it has many little peaks of different wave lengths. Leds on the other hand have a very narrow peak in a specific wavelength. To get the full spectrum you'd get from a t-5 or Mh you need to use a hand full of different color leds.
For an idea of what I'm talking about I have not only royal blue and cool white leds in my reef fixture but also have some neutral white, deep red, violet, cyan, and blue.