When I can get a grow going in the fall, it'll be 1 gal smart pots for me too. And probably set up some sort of DIY drip system. Also, I think I'll use about a 1/2 inch layer of sand to top off the coco as it's supposed to be a good way to keep the fungas gnats out. With smart pots and coco, both of which keep your roots very well aerated, I'm wondering how necessary it is to use an air pump and bubble stone in the nute reservoir. My grow is in a bathroom right off my bedroom, and I really don't want to have to listen to the sound of an air pump all night long. Even the so called "whisper quiet" pumps start sounding like a 747 after a couple of months. I just hate that sound...