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Goldfish Winter Deaths in Kentucky: Pump Failure

South-central KY: 11 goldfish dead after pump clogged. Asks if goldfish can survive winter outdoors if tried again.

Death Cause: Not Cold

Goldfish don't die from cold unless frozen solid or no gas-exchange hole. Pump failure → no aeration/filtration → ammonia spike or oxygen crash.

Requirements for Outdoor Survival

  • Pond >2 ft deep (KY), >3 ft (MI).
  • De-icer + air stone for hole and oxygen.
  • Pump/filter running or air stone only.

See winterizing guide.

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