HCA: Hermit Crab Association

Using the heating pad on the side and no lights, where is it best to put the thermostat probe? Under the sand or on top? Away from the heating pad on the bottom or the side?

I updated the link to the pictures so if you can try again. The substrate we use is half the tank sand and half is Zoomed Reptisoil. It is about 1/3 high of the terrarium. For the screen top we have tried a wet washcloth, we have tried tinfoil (only half though). We have a light that sits on top of ...

Hello all, We are new owners to 3 hermit crabs in a 10 gallon tank since May of this year. We have been doing everything we can for them and have seen them very little. One of the crabs (Sol) has dug himself under since the end of May. The second crab (Lune) has been out only for a few weeks but he ...