HCA: Hermit Crab Association

Hi guys.

I'm kind of at a loss for what to do. I have a 30 gallon tub. Everything in it is perfect except the humidity.

I don't have moss in there. There's just the sand mixed with EE and the two pools. The lid of the tub is covered with as many holes as I could get in there. There has to be like 50 holes. I have calibrated my digital hygrometer.

I just don't know what else to do to bring it down. I can switch to a 20 gallon long glass tank with a metal locking lid (originally for a snake) but it was meant for reptiles and I don't know if it would work. It has plastic feet on it and the sand would put a lot of weight on them...

I like the tub. It's a perfect size and my crab is happy in it. The sides are just all condensation and I can't see in anymore.

Any tips?

This is the tub. It's see-through green. All the white misty stuff is condensation.

The high humidity won't hurt your crab. But, may cause more mold growth and I can see may be annoying since you can't see in the tub. Have you tried leaving the lid off at times when you are around and there to watch? That's my only thought...maybe leave the lid off for a half hour or so and see how much your humidity drops. Also, wipe the condensation off the sides of the tub with a clean paper towel. Since this is a new set up for you, I'm wondering if just allowing the tub to air out a bit will help get the humidity down and then it could regulate itself better??

I had a 20gb mesh lid which is all holes and only had to cover the back half with clear wrap in order to get a 10-20% humidity increase. The tub lid is probably just not right for air flow and humidity regulation. My other tank a 20g tall has glass over it that's just a couple inches short from the front and has a healthy amount of humidity too. Open edges work for me for some reason.


Mommy of 11 PP babies - Poseidon (Sid), Toby, Matty, Junior, Aries, Kaylee, Turbo, Adrian, Freckles, Pepper and Flower. RIP Octavius & Fred