I read it all, and to be fair, we know that he has used a few different bulb choices over the years but we do not know if the same camera was used or if the WB was changed and it is always very difficult to capture true colors with a camera. At any rate his ability to produce a beautiful tank is beyond question, no matter what light or nutrient control method he has used. It is logical to assume that his skills also increased with time and experience and that his experience led him to the path that works best for him.