I didn't see their old florescent orange painted shell sitting out in the open, so I carefully picked up the couple of log tunnels they have and ran my finger around gently in the top layer of sub, but still couldn't find it. My newly molted crab Teto slept through it, but my other crab Kino acted like it was the end of the world, lol.
I think when Teto molted they may have left the old shell at the bottom of the tank and came up naked initially? Teto is much bigger now after molting, maybe they didn't fit into the old small shell.
Should I pull the crabs out and dig for the old painted shell, or should I just leave it and hope it surfaces on its own at some point?

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