Yes Production, i was not getting the weight i wanted out of LED. I used to run Six 240 watt Black Star LEDS in a 4 x 8 tent, when i switched back to HPS that same grow space doubled in weight. It was hard to pull over an lb using the lights. Switching to HPS i was hitting 2lbs.
Granted these were some of the first blackstars that came out, so i am very skeptical of LEDS. I see alot of back and forth about the tech, but i can only go off of my own experience. For me Watts = Weight and i do not by into the thought process that 400 watts of LED is equal to a 1000 watt hps. To me it just don't make sense.
400 watt LED is 400 watts period.
Another factor is..... going back to HPS my grow got more efficient, six 240 panels in a 4 x 8 puts off some SERIOUS HEAT. Air cooled hoods dropped my temps 10 degrees. IT would take a whole lot to convince me to go back to LED's. Like i said this is just my opinion i am sure now days the tech has improved since my panels, but i am not willing to switch up and gamble my numbers.