AT600s are a commitment. It really is a tool for serious growers who want consistent results over time. And let's not talk about $$$ to get going. Not the kind of panel you use for 2 or 3 runs. So the question is why don't you explore LEDs that you can use to supplement your current setup and try to reduce some wattage and heat that way. I'm assuming you're using HPS/CMH, so lights like Kessils or A51 RW75s on the fringes of the grow could help getting rid of a bulb or two, or go from 1000 to 600 watts bulbs. Or you could start buying AT200s, an AT600 is basically 4 AT200s I believe, and slowly amass 4 AT600s over time but that's even more $$$ in the long run, unless you can work something out with the Apache boys. I'm still surprised I don't see more HID and LED grows around here. Like some door to Hell will open if you use both at the same time . Maybe some people just don't want to say they were wrong about LEDs, (not talking about you Beech) or can't justify the cost yet. Good Luck!