Using individual hydro pots with outer pot and gauge

[Sharon's Sheepdogs]

Has anyone had a successful experience growing orchids in pots where there is an outer pot, a culture pot and a water gauge. My concern is whether enough air is able to circulate around the roots to prevent root rot. However, a set up like this using the water gauges when you have to go out of town seems beneficial. Can anyone provide me with some pros and cons using a system like this. Is there a higher incident of disease using an enclosed system?