preparing to make the change from my 90 to the 150 I picked up last week. One of the first things I have to do is install lights in the 72" canopy. I'm waivering between staggering and over lapping T5 48" lamps or installing 5 or 6 rows of 36" lamps end to end. Either way I will have to purchase end caps, I have 10 or 12 48" lamps of which I am using 6 at this time. My concern with over lapping is possibly creating hot spots in the center of the tank even with my intent of hanging the hood approximately 8-10" above the tank. Does anyone have any info, experience or informed opinion on the over lap setup.