Well I'm not sold on the cheap new light... Used photone to check ppfd and at 12" I'm getting 600- center and less as I move outward....and next to my @ViparSpectra P1000 which is putting out 750-800 at the same height there is a clear difference ....tried to save a buck lol... Well I guess now I'm going to look into the @ViparSpectra XS2000 220w led or the P2000 ...both meant for a 2x4.