That is part of my issue.I only have montaines so I wouldn't have a clue if this is good or bad for other species. It's too early to even know if it will work out long term. I not sure if I will continue it thru the rest of the year. I mainly tried it because my air conditioner was dropping my ambient humidity so low at night and to see if I could get a better night time temperature drop without adding more AC. My cage thermometers are reading a 2˚ drop below my thermostat. That might be because they just aren't that accurate. My screen cages are covered so only the front and top are screen.
I do find it interesting that when I test my ultrasonic humidifier after refilling and cleaning it, the only time I run it during the day, my avatar will move into the stream by the nozzle. Normally he hates any kind of breeze. I don't know if he's attracted to the motion of the fog or likes the sensation. The adult females do so but to a lesser extent. Just an observation that tells me it can't be too unpleasant for them.
Like any other aspect of husbandry you want to avoid an over growth of bacteria. The immune system deals with bacteria all day long in moderate amounts. Clearly you don't want to be forcing them into the respiratory system out of a filthy pool of water. I use PVC and don't glue the joints to it can be cleaned easier and run my ultrasonic humidifiers until almost empty and wipe them dry and then let them air dry. I dislike the hose that I see on the reptifogger because it is corrugated and water is only going to pool in the grooves.
The ability to clean it throughly and ever day, (the link from the scientists say everyday is best, every 3 is minimum) and clean the pipes, makes it easier.
How for me, personally getting to those pipes, is not an easy feat. PVC glued or not, my tubing will be behind the cage, which will weigh a good 250lbs. As it's solid wood, and as tall as my ceiling. In that case, it's not long as easy. Especially being it's a bioactive enclosure.
That said, I have thought of adding wheels to it, and I will likely do that. Because otherwise it will just be too much
That said, both my fogger and Water supply are RV stoarge tanks. Designed to hold drinking water. I may add UV sterilizers and the fogger is a very closed system, with the fan having a good filter, and all water being RODI.