I bought a small hammer coral over the weekend. As soon as I put into the tank, my peppermint shrimps attacked it. One head was gone in five seconds. They were taking apart every polyp and white stuff was flying all over the tank :'( I moved the coral into a separate container. It almost recovered over night and was fully opened by morning. I am not sure what was going on with the shrimps. I thought they were reef safe. Any thoughts? ???