Ok so I recently found a few gorilla and stone crabs in my ref tank that has killed a fish and bunch of coarl. Please tell me out to get these agressive stupid jerks out of my tank. They are very destructive so far and I feel like giving up. Please tell me if there is anyway I. Can get rid of these things. Also do any shrimp or fish eat stone or gorilla crabs. It might make it easer.