>>170795>how big are these things foot printsThe 55-barrel one takes up about 4-5 square feet of floor space. Depending on your hole placement you can have about 25-32 square feet of growing space on the barrel.
PVC garden towers are really nice for maximizing growing space too. So, look into that sort of thing.
I'm not sure about the aquaponics system because they are so varied, but they are space efficient if they have multiple shelves.
