A piece of cake is what was anticipated. In the end the T-12 ballasts got relocated up to the ballast room taking their blistering heat with them. This could apply to any fluro set up. I think I'll show the "step by step" in the lighting chat room and just before and after in here. It cost about $8 each and the third one took 35 minutes to do. I'm sure it'll remove about 10 degrees from the veg (closet) room. I plan to mount these on cookie sheets as heat sinks before venting.

I thought I'd post this due to all the overwhelming response to the log.