The lights below have been updated unless stated otherwise. This will give you the lumen output needed. A 1,000 W. halide puts out 125,000 lumens, so this would be a good choice. Two 400 watt systems may be better because light would be coming from more than one direction. A light track or rotator is also beneficial, as is white paint or mylar on the walls and ceiling.
White paint works better with clear bulbs.
Mylar is better with frosted bulbs. Please refer to the horticultural lighting information area of our site for help in choosing the HID lighting system which is best for you. Remember also that light movers can also be used to augment your Metal Halide or HPS lights, increasing their coverage area. It's great for seedlings and full grown plants of all types. These fluorescent lights closely approximate natural light.