I could see the same thing in my mind as well. Rats that had been charred because of a lightning strike hitting a lightning rod that was attached to a metal rack system. Maybe a new horror movie could be made that was a cross between Night of the Living Dead and Willard?
I knew he meant lighting, but since it was misspelled in both the subject line and the post, I couldn't resist.
But seriously, I don't use any lighting and I keep mine in a garage with only one small window. I don't notice much of a difference in breeding/production except for temp. changes that occur seasonally. My garage is much brighter in the summer than in the winter due to the sun being in a different position on the horizon. If anything, I get less production then, but it has more to do with temps than light.
Rodney