What is a good humidity?

[fluffylily]

Hi all,

I just have my terrarium set up, it's not final yet, and I haven't figured out how I want to design it, just have the plants inside as of now. The humidity is ranging from 80%-95% but stays around 85% most of the time. Is this fine or should this be higher? I wanted this to be above 99% originally. I have LECA and just an inch or so of water on the bottom.

The mounts dry out within 1 day, which I thought wouldn't happen. Is this fine? Should they be staying wet longer? At this humidity, do I still need to water them (I plan to dunk) every week or more? I thought this terrarium would be a bit more self-sustainable. Any suggestions on how to increase the humidity or if it is necessary or how I will know when to water these guys? Thanks!