Both. A one gal res isnt even close to enough space for even a single plant. Im not sure how much light it comes with but if its anything less that a 150w hps or cfl (which im sure it does) its going to a weak yeild in comparison... I guarentee it! With all the modifications needed, IMO you would be better off making your own diy system (about the same price and you will get much better bud)What makes the aerogarden so poor in ur opion? Is it the lights or the 1 gallon resivor?