And you were told to define, for even a Budmaster HC4 will outdo a traditional HPS at in excess of 1 µmol/w (264µmol at 200w TOTAL power draw including cooling, etc).
Or are you going to say that the world is wrong and that LED is less efficient than HID or incandescent?
Better still, read this for a PERFECT comparison of 400w HPS vs 400w of LED. I'll sum it up for you, 400w HPS = 618µmol/m² or 1.545µmol/w. 400w LED = 811 µmol/m² or 2.0275 µmol/w. That means the same 400w produces 131% more µmoles/w when looking at LED vs HPS.
https://www.pro-emit.de/led-vs-high-pressure-sodium-lamp/
Next question.