Using buckets are a great system to use, they have them in the 2.5gal and the 5gal, the 5gal are the ones to use though, they're obviously bigger, and will hold more of a plant. A great self contained little unit to use, stick a hole in the bottom/side of the bucket and run a line up through a drip spear, away you go. Or you could attach a bunch of them together with spaghetti line and away you go, one res and one pump, your controlling 6-8 buckets or so. Cheap way to grow your plants hydroponically!!

Is the half brother of the 5 Gallon Bucket