Another cool thing about running solar tubes with actinics at night.. you get cool UFO looking lights on the top of your house. LOL.

Ace,
I've heard rumors that the Phoenix requires replacing sooner than others (within 6 mos), due to color shifting?
BTW, on Guillo's tubes and the 1/4 PAR reduction...did you use those studio filters or household blue celophane?
Hmm, never heard that with the Phoenix bulbs myself. I think they are still fairly "New" to the market (SE bulbs that is) so not sure how too many people have accurate information on that.