I am having the same issue (just setting up a tub after having a custom enclosure). My acurite was reading "HI" (which is humidity above 90%) after I put in the cypress -- that was with the lid off of the tub!!

Cypress is fairly moist right out of the bag -- the humidity in my custom enclosure even gets pretty high when I put in a new batch. It usually dries out after time, but I'm guessing it would take a lot longer in a tub.

I decided to try drying out the cypress a little bit with a blow dryer (on low otherwise there will be quite a mess). It looks like it did the trick -- humidity is now sitting at 60%.


Good luck!

-- George