Here's the pic for anyone who hasn't seen it:
I suspect that my particular combination of ballast and bulb, may be lacking in an area of the spectrum that the 10k had previously filled in.
Doug have you found the same type of bleaching? With mine, the zoox seems to have evenly disappeared from the entire coral. Most light related bleaching only effect the area exposed directly to the light. This is why I am looking for similar experiences. If it's not the light cuasing the problem, I want to know what is!