I'm not sure if I'm getting this right but your snake is in a glass tank inside an air conditioned room? What is your heat source? A/c makes it tougher to regulate the humidity along with heat lamps. Heat lamps and AC drastically dry out the air making it more work to keep the humidity at normal levels. Also an accurite thermo/hygro will keep room temp and humidity f fine.
Sent from my EVO using Tapatalk 2