I wonder if anyone can rationalize this. I have a coralife power center that I use as a timer for my lights in NanoCube. I have stock lighting (48 watts). I decided to try out my other cube with the same wattage of lights and plugged it to the power center at the same time as the other since the coralife had a spare outlet. Somehow one of the ballasts became hotter than the other and gave of a burnt smell. But it still is working. So I made everything cool down then tried the hot ballast again....this time it stayed cool. What gives? Does it have anything to do with the power center?