According to the manufacturer a 90w LED light is equal to a minimum of 400w HPS in usable light for the plants, NOT lumens.
I originally had a 1000w setup with exhaust fan and a air conditioner which all together drew about 1100w.
Now with the LED's there's no heat and the equivalent light...
Soon I'll be starting to grow nine pineapple express cuttings with four 90w UFO quad band LED grow lights. The plants will be laid out in a 3x3 square with each light facing in to the plants at an angel at each edge for max coverage.
:grinjoint: