A 600 watt bulb at 92,000 lumens equals 153 lumens per watt.
A 1000 watt bulb at 140000 lumens equals 140 lumens per watt.
600 watt lights are more efficient than 1000 watters just like ghb said.......
lumens is right, but that's not really the case here, and finding out how he's going to do this setup, would really tell us which lights to run.Plus he my not want the bill from 2000w setup, plus ac running right now
I'm just learning for my self less is more for grow ballast runs, and I love the 1000w size bulbs!.jmo
Was just going to do a 1200w grow my self, then said to my self how long it take's to harvest a crop, plus my wife runs the ac all day.So 2000w and was pushing it for me right now $$, so 1000w, plus my 600w, worked out this summer.
1000w I like to put a few big plants, and 600w run more smaller plants