Well I'm doing 3 troughs. 5 feet long, 8" wide, 10" deep. Wasn't gonna do nothing fancy...just potting soil, vermiculite, perelite, compost, and some casings with no drainage...but I'll do away with the compost n' casings as I plan on running an automated feed system myself...and my nutes seem to have everything the plants want. I wanna try coco...just so much to figure out with hydro....ahhh...the things to come...auto feeding...flip boxes...if your going deep....go balls deep I reckon'