I'm up to 14 gallon holes, about 2 ft X 2 ft.+ I also got a 2cu ft bag of perlite and 1 cubic foot of worm castings.. just made some tea using an air compressor. UI'm bout to have some monsters hopefully i also just ordered Floralicious plus, Mycorrhiaze, Flora nectar pineapple, and some Flora kleen, so cheap online..