HCA: Hermit Crab Association

Ok so my humidity in my tank is staying pretty high I think and idk if that is bad ok or what...currently it's reading 99 humidity and 82 degrees...the lowest humidity it's read in the last 24 hours is 95 it is very hot and humid where I live but in the house is central air ac which stays set to 78 if that's helpful idk. I'm new to this crabbing thing but adore the crabbies and want them to be helpful so what do I do. Someone please tell me if this is okay or what and how to fix it if I need too please and thank you in advance.

What kind of hygrometer are you using? Are you using a digital one?

Yes it is a digital one is that bad?

No, those are the good ones!! Lol

Having high humidity isn't harmful. It's the low humidity that can do damage to their gills.

80's temp & 80's humidity is ideal but can be hard to keep at those exact numbers.

What are you doing to make your humidity?

Do you crack open your lid, to release some of the humidity?

Well the substrate is play sand sand castle consistency I have a salt water pond and fresh water pond made and I spray the tank with a mister once a day usually. I have been opening the lid last few days to lower humidity yes lid is wrapped in plastic wrap to hold in humidity guess that's working well lol. Okay as long as the high humidity won't hurt them I'm good with that thank you.

I would stop spraying every day. If your substrate is correctly mixed and you have bubble pools and a sealed lid, your humidity should stabilize with no issues.

Overspraying can cause a buildup of moisture in the substrate, which could then either lead to a flood or bacterial bloom.

A bacterial bloom is when oxygen does not reach certain points in your substrate and anaerobic bacteria start reproducing. This causes the sub to turn grey or black and makes it smell like rotten eggs.