Pump burn-out causes Koi extermination
Yesterday, my Koi pond sump pump blew the fuses, I removed it and it had fused itself with a very strong electric fire smell, and a very hot casing. Within the hour the pump was replaced with a new one. Three hours later all 7 of my 40 cm Koi's were dead, the smaller ones were dying, and only three small fish survived and are still swimming today; 14 hours later without showing any stress. I took a water sample to allow a test for causes. But what do I search for? A Koi veterinarian has not been able to help me, as I need to request for specific contents search (they give me 36 choices, and each is separate cost). My final concern is the lasting effect of this poisoning on my pond's condition. Has anyone any idea on the cause of this disaster, I've eliminated electrocution, and metal poisoning. I am guessing that a gas has released itself from the overheated lubricating oils within the pump. One small fish is now in store in the freezer. The pump was only six weeks old!