Been looking for the last hafl hour for a video I saw just the other day for the 6th time but can't find it yet.
It's fairly simple. Get a 10 gallon or so res, Cut holes in the lid a bit bigger than the net pots you will use (i. e. for a 3 3/4" net pot cut 4" holes so that the lip of the net pot hold it in place). Drill a 1/4" hole up high for the air line ( I'd do two or three). Get a 150gph or so pump, piece of 1/2" tubing from the pump to the hub, an irrigation 6 or 8 port hub and some 1/4" irrigation hose and you're set. I'll keep looking. What you got planned?