I am familiar with the fact that a hot dry environment will contribute to pyramiding, but my question is does my tortoise's entire terrarium need to be at 80% humidity? I am having a hard time getting the whole tank there, but where he sleeps during the nighttime temperature is about 85 degrees Fahrenheit and 85% humidity. Is it okay for him to hang out in the drier parts of his tank at day as long as he always sleeps where its warm and humid?