I'm not too sure about the champion lighting thread, but I did figure out the dimmable metal halide ballast for the profilux. After researching and talking to a few people from Profilux in Germany, they are still in the developmental stages of the dimmable metal halide ballast. The only thing on the profilux line that is dimmable, is their t-5 ballast option. Profilux is coming out with their own dimmable ballast. Plus they have LED lighing, which mimics seasons, clouds, and storms.