Great idea. We aren't having any issue, but that's one I will keep in mind for isolation in future build/upgrades!
Yes, Kevin Pockell finally pushed us over the edge to try them. We went with the PowerChrome bulbs, they really add a nice color, like them better than the SuperActinics. Still running the 2 IceCap ballasts. Got them set up on 2 sets of 3, they stagger by 1/2 hour morning/night for on/off.