Do you guys install an inline bacteria filter on the hose? If yes, what filter did you install?
I use generic in-line bacterial filters with my CPAP - whatever is reasonably priced when I am reordering supplies. Do note that these filters are hydrophilic, and should *not* be used with a humidifier.
Most heated humidifiers target around 80% humidity, and it's usually higher than that in SG (unless you sleep in an air conditioned room); hence I never felt the need to use it when I am in SG. I only use my heated humidifier in the winter months, and remove the in-line bacterial filter whenever I do.