It was 4 plants. Grown in a 11x11 foot room. 5600 watts total. 1 1k metal halide and a 600 sodium in the middle and 1k sodiums in the corners. Raised floor that all plumbing is under and vortex blowers mount to the floor, floor has sides and a 4 foot x 18 inch hole on one side with furnace filters to keep dust outa my cool tubes. This was a legal medical grow. I can grow six but four seems to be quite enough!:rasta: