I'm new at this so I can't really give anyone any advice. I do however love my setup and the 400w lighting works great in my small closet. Not much heat as long as I have fans going 24/7, which is no big deal. They shut off sometimes when the temp drops way down but it was so hot this summer they stayed on most of the time. I use a XtraSun 6 Inch Reflector - Air Coolable, Xtrasun 400 Watt Halide/Sodium Convertible Ballast and a HiLUX GRO 400 Watt Super High Pressure Sodium Bulb, all for about $260. I have some buds the size of corn cobs from this setup. I'm looking forward to harvest next week. Happy growing everyone!!