i live in south ga usa. our temperature out side is 81 and humidity 40 but i want to do a grow room in door and i just want to knoww hat all i need for hps setup and i read about them and watched alot of video. but there questions i still have. i thinking ahput getting 400watts or 600watts with cooling tube in 5x5 tent
this is a good light HTML: http://www.amazon.com/dp/B004YXDHX6/ref=twister_B00EUMEJRO and $122.94 is good value but concern is your current temps I'd do get a T5 rack of 4-6 tubes at 54w each, they burn cooler than the hps, which has largley been replaced with LED COBS good luck