I'm building a 3.1sqft (50cm x 58cm) 7.5ft (2.3m) high veg cupboard, split into two 1m high levels, with a reservoir underneath.
Running a 240w 301b LED split into two 120w individual grow spaces, about 39w / sqft.2 x 50L / 11gal tubs with 4 plants in each, with a 20L res under the bottom tub...