mylar, light rail, fans,in line blowers, a air tight hood the u can vent..theres a cool cylinder hood that comes in 20 inch and 24 inch the 24 will fit 2 600w just make sure u vent it prop. thermastat with a remote senser and humidity , co2 .. if u have a water heater u can use that for co2, and if venting out of the house or into the house its a good idea to have some kind of odor control... hmmmmmm just lots of toys!!!!! lol

happy growin man