Not to mention the aerosolized copper and my inverts in both tanks, especially the 29g. There is more aerosolized water droplets coming from the 2os than there is from the DTs. They both have airstones in them. My DTs have 2 power heads each, but I turned them so they weren't breaking the water when this all started and they're not super strong ones. The skimmer on the 29 is a closed system (HOB) and the return is very gentle. I'm quite familiar with aerosolization of disease, but for some dang reason I didn't think of the MEDICATION. I also missed the 10 foot rule. I get that it can be a problem in a large facility with many, many tanks going, and industrial strength aeration (is that a term? LOL Well, humor me.) I would not want to be in a facility with a closed air circulation system like most building have these days. It's why birds on the first floor can transfer psittacosis to birds on the fourth floor. A proper isolation unit *should* include an air system that is closed off from the rest of the building, having it's own heat and cooling sources. The flip side of that is that it almost guarantees contamination within.
aaaaaaaaaaand, now I'm rambling......
The good news is that the 20g that I'm setting up for the lightning clowns is across the room diagonally about 20 feet. No water involved right now, just the tank and stand.