I thought I would share my current lighting project. It is an array of 10 80w SMDs that are water cooled to keep heat out of the 24x48" tent, as the radiator is external. I've been making the lights as individual air cooled units before this. The plants respond very well to them. The layout should make the lighting more even in the tent. The 80w lights will be under-driven to 50w, so this should draw 500w. 8 lights have 4:1 ratio of red to blue spectrum and 2 (center) lights are full spectrum. The tent is designed for 6 plants, which is my legal limit. I will update as I complete the assembly. Let me know if you have questions.