But.....
At least on a Respironics system one, the humidifier tank is downstream of the air pump/fan. It would seem to me better to have it there than having in drawn through the fan which is what happens when you put a vaporizing disc near the air intake

It occurs to be that it might be possible to see older data by simply erasing the current week's files. Of course, always make a backup first. When I get the software, I'll give it a try. Does anyone have a comment on where the cheapest place is to get a copy of the 2.0 software (I have a System One...