The only humid spot in that cage is by the water dish which the snake will usually hug when it gets ready to shed, Zoo Med heat pads have been temp controlled for at least the past 5 years and will not go even near 90F. The pad you may have used may be an older model. This setup is a very barebone ready to clean easily setup for a beginner, it WILL work it might not be up to everyone's "standards", although I would have done it differently it will work.