Hi, in the past i used their ratio of the 2:1 and found it to be too white even using the new gens, so now i am using 6 new gen and 6 fiji purples.
i think the colors are fine. I do change the blubs often, every 2 or 3 months.
I have thought many times about putting an actinic blub on there, but still not 100% sure. It would be intresting to see.
here is a link for some par values, looks like KZ are a bit higher in value.
http://tfivetesting.googlepages.com/par