I run my lights 8-8 and its still too hot. Even at night its almost 80° right now in mid July, so when that 1KW light turns on in my tiny little 5x10 grow room and the night temp is at like 78°, its just too much. In the fall it will be a different story though, and I will have some huge plants to yield huge buds, but it just sucks waiting that long. :jointsmile: