I think you're right. Going with the attitude of setting up just what i wanted at the time has kinda put me in this mess. If I have a bigger res. I can always add if needed although I'm fairly limited in my overall space. 40 buckets OMG, if only I had that much room. 6 to 8 is going to be tough probably! I was just thinking their kit is a 13 gallon and an 8 gallon so that's only 21 gallons total. But if I get one 30 gallon or so, I can do without the other. The good thing is it's right in my laundry room so I have a tub for draining filling, so thanks for that idea, I can rig a hose to have right beside it or something. OK, I'm going for it dude! You convinced me. Check out Ropakcorp.com buckets look the same huh, I'm thinking of doing a square 5 gallon and 3 gallon insert and I bet having deeper buckets, more root space etc. could be helpful! All of this stuff is really pretty easy to duplicate if you get creative huh! Thanks alot man. Good friends are hard to come by!