I just got two small ultrasonic humidifiers today and put them on my neps. The temps droped from about 80-82 to 75 because they have a built-in fan. The humidity jumped from 60% to right now 85% Tomarrow during the day and I turn them off will it hurt them when the humidity drops? I just want to use them at night when the humidity needs to be higher and the temps need to be lower. The plants are gowing great on my dresser in front of my east window. I don't want to mess them up with trying this. What does everyone else think?