i was thinking on just useing the 400 s up top, and put the 2 foot cfls, verical on the side walls, i have 6 of them. figure i put them in a figureations so that they would be spead out over the walls. i dont want to have to deal with the heat of a 1000 watt bulb. much less the coast as well. i was thinking on putting the 3 400s togather on a pully system. so i could raise all lights as i need, all at one time . then the others would just be fixed, on the walls. but this would give me a 5 foot by 8 foot by 8 foot hieght area. i figure i could grow 6 footer easy. increasimg my yield. but shit i hsve so much mow and with these others comeing through, i should be good for most of the year, if not all year. ill steal do the autos, thats a small area, and easy to maintain.