Agree with
@Organoman's answer. ditch the dome.
I have used humidity wells before. its like a dome, but it has no top so the extra RH is not as much as a dome and allows for airflow still. I legit cut the bottom off a yougart container and plant that over the planted area, I only do this with seedlings if my rooms RH is a bit low. but 60% RH is more then enough. 80 temps is also great.