Ray, the newer 10,000k XMs really aren't that yellow at all.
Did anyone read the article? I didn't yet...It looks like a really low nutrient tank based on the awesome colors, but I didn't see any mention of ZeoVit in my quick scan. I wonder what his trick is? Usually you don't see those pastel colors with 400W XM 10,000k on a 32" deep tank. I thought it was a T5 tank for sure when I first saw it.
I run 250 10k xm's and they are not yellowish at all.