Quote Originally Posted by brynpav
I sold my LED panels and went to induction grow lights. Ck out youtube and you can see videos of grows under these lamps. They offer over 90% usable PAR light and the plant yields have been comparable to HID because the canopy penetration is better then my LED lamps had ever been. plus they were less expensive then the LED panels I'd bought. :rastasmoke:
90% usable par? Only if you're using a special red/blue phosphor blend. If the light is any shade of white (warm white to cool white,) your PAR can't be any higher than 40 and you just got lied to by marketing.

And I design induction lighting. They have WORSE penetration than T5HO units. Induction ~85lm/w T5HO 100-105lm/w.

Also, I have yet to see any induction grow top the typical GPW barrier. I've seen LED top it all day long.