Not sure about that one. Got a homie who did an experament... One thousand watt light, four plants in five gallon buckets. The other one was a thousand watt with four plants in ten gallon pots. He got a (apprx.) ounce and a half almost more yeild with the bigger pots. It just depends on what your comfortable with, you might not have all that room or whatever. Personally id go with five or seven gallon buckets, just because I like to focus on the quality of my.meds, don't get me wrong though quantity is nice too... either way good luck to ya!