See this is what I meant.

First you have the closed tub with the fog head in it. It then generates fog and that fog rises to the top of the closed canister. Above the water level is a little fan that is attached to a hose to push the fog into the grow area. The stem of the plant is sealed so no fog can escape from there. The remaining fog condenses or whatever and becomes water again at the bottom of the root chamber. The root chamber is tilted slightly to bring the water to a hose which takes that water and drains it into another reservoir or maybe even back into the fogger reservoir. For the tops of the plants I can just get a simple fogger from target or w/e to keep around the plants to raise humidity and cool the plants down. So what do you think?

Sorry about the half assed picture.