It's funny, I know LED is popular and more efficient and has specific spectrums and high PAR blah blah... But I'm still not convinced enough that it's worth switching from MH/HPS..
Sure HID wastes power and isnt nearly as efficient in PAR output/wattage. But the bud I grow is seriously top shelf with it. Ive used 250, 400, 430, 600, 1000watts, and none of them compare to 1000 watt
eye hortilux, except for DE-HID which are in a class of their own. And CMH do very well in small spaces.
MH and HPS just reliably grows Huge hard buds covered in crystal all the way down through a 24" deep canopy.
Maybe I'm just an old dog stuck in his ways. If it ain't broke...