It's accurate for temp, I think a couple months ago the hygrometer reading went slightly off... I NEVER trust just one set of thermos/hygros, no matter what bator it is... always have at least 2 or 3 of each in case 1 craps out during a batch...
Once your temp is set though, it has stayed rock solid... I now run mine slightly higher so I adjusted them a few months ago... still staying steady and that's the only temp adjustment I've made since I started using them...
Filling the wells in the tray keeps humidity up for hatching pretty well, but they tend to dry out before 3 days is up... and it made it a bigger pain for cleanup so I switched to small containers covered in wire mesh for humidity control... also I put gripper shelf liner down across the bottom mesh to make hatching cleanup even easier...
Great...
I use the shelf liner in my styro at home. I like the egg Turner in the Hova better than mine. I hope the students have as much fun with it as I will.

