Tucker has found the trap door. Honestly, I've had crabs for years and they never made it this far to actually go out the door of the lid. I've taped it closed with masking tape and should have done that a long time ago. Luckily I was around when he was there resting from the effort. He would have fit all the way through it.
When I got home from work he was hanging upside down on the lid two corners away, at the left back of the tank. Then a couple hours later he was here! Guess he had an appointment...
