Stepheninky,
I've got a small Ozone generator with single Airstone. I am planning on dropping it down the filler tube (pulled up 3 inches) and let it run for about 30 minutes, once per week. I'll do all 6 manually this way for this Winter.
Next Season, I am going to embed an individual Airstone in each of the 6 InnTainers, and connect each Airstone to a 6-port manifold, to the Ozone generator. I'll set it up on a programmable timer to run 5 minutes each day.
Our indoor humidity runs 50% to 60% typically this time of year - unlike the colder parts of the Country where you need to run the furnace a lot, which dries our the ambient air. I may mist the plants from time to time if I sense they are drying out. Lots of "experimental" stuff to work through on this project, but with the cool, damp Winter weather here, not much else to do to keep busy.....
Raybo
