I agree, Doubling the 600w is so much easier and you wouldnt have the problems if you upgrade to a 1000wI would buy another 600 . and that's double the area of a 1000 will cover . and two 600 are much easier to cool then a single 1000 with closed hoods. I used to run 1000 watt lamps only reason I got rid of those 1k lamps were heat problems . major decrease in cooling needs with the 600. and two 600 would run a single 1000 cfm will be more then plenty of air running through the hoods.
in a 3x3 space?I would buy another 600 . and that's double the area of a 1000 will cover . and two 600 are much easier to cool then a single 1000 with closed hoods. I used to run 1000 watt lamps only reason I got rid of those 1k lamps were heat problems . major decrease in cooling needs with the 600. and two 600 would run a single 1000 cfm will be more then plenty of air running through the hoods.