All the forums and manuals tell you to stay at 60-70% humidity , which does work but in my personal reference i prefer it be slight higher at 70-75% . I came to this conclusion a few months with my normal female and my spotnose male were shedding at the same time period i usually start rising the hunidity when their completely dull which in my case all 5 of snakes do. Well, after their eyes went blue turning to back to normal follow by another day i check up on my normal noticing she had pieces of shed near her neck and than again toward lower end of her body. My spotnose was the same way just with more breakage. I left out that i mist the normal while spotnose wasnt (through the stages of shed). Since than just stay at 70-75% humidity and misting them lightly through shed. (Im using a rack system, control with a herpstat 1 , measuring humidity with accu rite gauge from walmart)