In many rooms, you just don’t have the height to run a 1000W fixture at 100%, and in other rooms, you don’t need the intensity. Running a 1000W lamp at 750W all the time is not a desirable situation as the lamp does not come to its full efficiency and the spectrum deteriorates. In those situations, the 6/750 DE FLEX is the ideal solution, more efficient, cheaper and with a much better spectrum.
We call it the 6//750 as the efficiency of the lamp, dimmed to 600W, is still really good: as good as any other 600W industry standard HPS lamp. With the 750W lamp, you can come almost an ft closer to your crop (a bit less in overlapping plans).