Please help with Humidity for RETF

[flybyferns]

I keep mine between 50 and 70 percent. Initial misting always gets my gauges to read 100 percent since the gauge gets wet but soon after I am looking at about 70 percent. It usually drops to 50 percent by the time I'm misting again. (this is with lighting ON)

Once the lights go off the humidity usually rises to about 70 to 80 percent.

100 percent is way too much.

I agree with Don.
Above, a sustained, 80% humidity is not necessary.
Evaluate the enclosure's ventilation as well.
A little fan action - somewhere near-by......... may be needed as well?
But not so much that it effects the tank's temp.