I havent setup dawn/dusk yet. I just put the t5s on the lighting controller and left the halide on a timer. I just turn the t5s on when I am viewing. Basically they are just for my pleasure anyway. I will say I love the color of the Giesemanns, but I am really disappointed in the brightness. Of course, I heard that about them. Although I love the purple look, I will definately go with a ATI Superblue next time so they are brighter.
Big news from this weekend. I am going to Chicago the weekend of March 27 to 28 to pick up a 4" Genuine Red Sea Regal that has been in an aquarium for 4 years! I am super excited, and, oh yeah, I will be stopping in at Shedd while I am up there! I may have a PBT from an established aquarium lined up, but I am not sure if it will happen.