Don't have pics of my old setup. But it went as follows.
18' X 16' X 8' room (IIRC)
8-1000W HPS lights w/GroStar reflectors + ballasts
4-4X8 flood/drain tables 45 plants per table
2-45 gallon reservoirs
4-submersible pumps 2 in each res for redundancy in case of failure (can't remember brand name or GPM) Both pumps in each res were tied into the plumbing. If one failed, then the other one could pump. If both failed, I was out of luck I guess.....never happened though.
Each res fed two tables. It was not a full automatic setup, I would go down and check them, then turn on pumps as needed
I had two drain holes and return plumbing in each table, and would simply pull plugs (8 in all) when the tables filled. The plugs were in the far end of each table and the rockwool was cut out at that spot to be able to plug/unplug the drainholes.
For the medium, I used 6X12 Rockwool slabs, with side plastic removed, and filled each table completely like a jigsaw puzzle, cutting them to fit if needed, like insulating a wall.
So, each table was basically a giant rockwool slab. I then took white/black poly plastic and laid it across each table, then drew cross lines. At each cross point I would cut an X then place a plant there.
I put the poly in (white side up) to both shield the root zone from light/heat, and to also keep a decent humidity in the root zone. Never once did it dry out. The massive amounts of rockwool allowed for huge roots from all the plants. I would have to cut the rockwool slabs apart after harvest in order to dispose of them.
No CO2 added, only constant venting thru 8"Vortex and carbon filter, and nothing but GH nutes and tap water and pH down.
I yielded HUGE off that setup. It was as perfect as I could ever imagine , despite the fact it wasnt quite fully automatic with the feeding regimen ( and other than the electricity bill).