I am new to this site but not completly new to crabs entirely. I have owned several in my lifetime just I didn'y have the correct info on how to care for these interesting creatures. Now that I have the correct info on care, I started up with a 30 gallon main tank, 10 gallon isolation tank and three small crablets. So far I am still in observation mode, something else that the pet stores don't tell you to do. They are quite active and seem right at home in their new environment. But I did have a quick question for anyone who can help. My gauge is reading the humidity is at 90-100%. Is it healthy for the humidity to be that high or do I need to let the lid crack a bit and give more air circulation? Any suggestions would be greatly appreciated. Thanks so much.