I am pretty sure they are all alive, there have been no dead smell from the tank. I have multiple fish tanks and so am familiar with the smell of dead snails and fish

I have read about the post stress syndrome, and saw that new crabs can stay down for quite a while, I am just curious because every single one has been down for so long. I am 99% sure they aren't sneaking up at nite because there are no tracks in the sand, and the food is not moving. I have been photographing the tank before bed and comparing in the morning in case I do have an awake one.
So is what I am experiencing normal? Considering they came from pet stores with no humidity, 1" subsrate etc and moved into the correct conditions? I am in northern WI so these guys had to travel a long way from when they were taken captive in the wild.....I am just getting impatient to see my little guys. I have poored a crazy amount of money into these two tanks and all I want is to see the little buggers once in a while!
