He used a G8 300 watt led, at least i think it was a 300, in a 5 gallon DWC.
I ran the same GG4 cut in 5 and 8 gallon DWC with traditional 600 watt HPS lights and a few 300 watt led's to fill the shadows and i pulled 24 zips off 3 plants.
That GG4 goes bonkers in DWC, ill look, im sure i have...