Gorilla crab setup
So I have a bit of a curve ball for everyone, can't seem to find anyone who has posted about trying it. I have a gorilla crab and I don't want it in my tank nor do I want to kill it. So my friend said she would make a tank just for him. She has a spare 13 gallon that she can set up for it but the question is what (if anything) can she put with it (coral, fish, inverts..ect)? Since being in my tank it has not attacked my coral or peppermint shrimp, but has taken out all my snails and hermits. Open to any suggestions!