What temp and humidifier settings have worked for you?

I’ve been on CPAP for about 6-7 months and during that time I’ve developed post nasal drip. My throat hurts sporadically throughout the day whenever I swallow. My PCP looked inside my mouth and noticed the post nasal drip right away. I had never drawn a connection between the CPAP usage and post nasal drip before he mentioned it.

I’m currently using a res med machine with humidifier set to 6. Just curious what temp and humidifier settings have worked for others. FWIW most mornings when I wake up my humidifier is pretty much out of water. Not sure if this is a bad thing or not