Hello everyone, i have an issue. In my self made rack i have one slot bigger than the rest. In this slot i keep a 41 qt tub with a lid and i ofcoursed opened holes. I have the lid because like i said, this slot is bigger than the rest. So my problem is that my humidity does not go lower than 70% at all times! I have opened holes all over and nothing. Im also using repti-bark and i reduced the amount in the tubs but still nothing. Is there anything else i can do to lower my humidity? Im conserned about possible RI that my snakes might get.

Here's a pic to better explain...