Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Mine broke in the tank

It somehow cracked and broke in the tank (sometime at night when everyone was alseep). I work up to find my fish tank completely shutdown because it tripped the circuit breaker. Looks like I probably only lost one fish, but they were all hiding so I'll know for sure later. Not sure how this would happen, but I'm not buying this heater again.