Thanks for the input. I worked on the cabinet this weekend and finished size is 52" wide by 41" deep, height is angled from about 4 ft. to over 6 ft. For my first grow I will use the flourescent tubes. What would be the best way to arrange the lights in the cabinet? If I use 12 lights should they all be hung above the plants or should some be on the side. I would think the ones on the side would be too far away to do much good, that is until the plants are big and bushy