that would be a drip system. I have 2 small ones with 6 plants each. 32 plants in a 4 x 8. That's awsome size you will need 2 1000 watt lights at least and you can grow trees with that. How deep is it ? If your going drip just use the 1 inch starter cubes of rockwool and fill the rest of the pot with hydrotron or lava rocks. They are cheap and reuseable if you wash them. It will let more air get to the root ball in the pot and help prevent rot. If you keep the plants short you can add an ass load more to the table. Please, show pic's if you can.