when that happen to my green bubble, he was torn right down the moddle in half, i put half in one tank half in a 10 gallon refugium, they both made it, that was 2 months ago. NOW 2 days ago the main one did it again. he was split into another 2 pieces. He moved because a power head fell and was putting to much current on him. but before that he was in same place for 6 months