[Dentoid]

I think we all need a lesson in lighting! I was under the impression that it was the Photosynthetic Active Radiation (PAR) that was the important factor in determining an organisms zooxanthellae metabolism. The color temperature (K) was just the color of the light.

I was under the impression that the K value of the bulb doesn't really have anything to do with the zooxanthellae ability to photosynthesize. The color of the tank imparted by the K value is a personal preference rather than whether the zooxanthellae's host could withstand the color.

Personally, I don't like the higher K value lights because they filter out red, orange, yellow and green. High K value lights make a colorful tank look drab and blue. That's a deep water look.

Have I got it all wrong?