I really couldn't tell you for sure as I have not seen a side by side comparison. Go with what you feel is right, you could always upgrade down the road if you want more.
Caveman your setup looks great. I wish to mirror your setup, how do you think you would do with 2X600 instead of your 2X1000? Would yield drop to around 1.5 lbs? One more thing!!!! How many plants is that?
Overgrow the government!!
billybob are you using 2.5gal bucket inserts or just single buckets? How big is your res? What pump/controller are you using? Your grow is looking hella sharp.
Flood and drain Ebb and flow setup.1)All this talk about how nicely the 3.5 gallon bucket goes into a 5 gallon bucket. Why not just put a 3.5 gallon bucket into another 3.5 gallon bucket. I would want to do this so as not to have to use so much extra water if you have to hit a certain level on...
I'm just curious, why did you decide to go with soil and not hydro? Was it just the initial expense and time or some strategy?
Post Script: Your my hero.