Need to lower humidity

I keep my honduran in a rack/tub. I have put plenty of holes in The tub but still am getting 65/70% humidity.

The tub has no visible moisture, bedding is dry. I was using aspen but Now have reptile prime but continue to have high humidity.

Any suggestions on what I can do??

Thanks

Are you sure your hydrometer is working properly? I had to replace mine recently because it kept reading super high when in fact the humidity was actually 40-45%, which is no bueno for my ball python.

I thought of that so I put another hydrometer in the tub and got the same reading. I use the free standing accurate meter - no probe on it.

The meter seems to be working properly.