As for the Sodium light, yah I do have a very nice 150 watt light ready to go. I drilled holes in the side of the casing to allow the inside of the reflector to be vented by my dryer hose. I was going to save to HPS for flowering though, as I dont know yet if i can control the heat that such a powerful light would generate. I will install it though when its time to flower, but for now i was going to use CFL's for vegging these.