3lbs per light 6 dwc buckets per light recirculating with dripper, 6 plants per bucket, no topping but stripping off all under growth, 1 hp regenerative blower for 16 buckets, 4 weeks veg. you can get 2lbs a light sog rockwool with a 4x4 white tray 142 4x4 cubes with a good sog strain also.