Bubbleponics is a word coined by stealth hydro. It is ironic because it does not depend on bubbles but on the tubes. If you have 3 or 4 12 inch airstones being driven by a robust air pump (and that is important) you will generate bubbles that when the break on the surface produce a fine mist. That will be in the space the netpots are in. Test it and hold your hand a couple inches above the water, you should be able to feel the breaking bubbles. Then set your water level 1-2 inches below the bottoms of the netpots. I load a netpot with hydroton and a rapid rooter but no seed and put it in to test how wet it gets. You can open it up to check. You can adjust the wetness by raising or lowering the water level, but you have to have adequate bubble action to begin with. This is nothing new, and roseman and others know it but fight against it because it hurts stealth hydro. I plan to get something up describing how I do it in more detail soon.