[finaddictfred]

I just put a colony into my 55 and put them almost at the bottom. I run PC's and 1 NO 10K and within a few hours the whole colony was open and looking great. 3 days later they look even better than they did at the LFS, where they were under halides. Maybe try to get them into a shady area near the bottom out of the direct line of fire from your lights.
Good luck and HtH