I have a question that I hope someone can give me some idea as to what happened. I was degreasing a deer skull using a Bucket heater in a 70 Quart Heavy Duty Muck Tub with 2" pink insulation covering the top of the bucket. I cut a separate hole out of the insulation for a bucket to put the skull in. I all so cut a hole for the bucket heater to fit down into the water. I all so stuck a thermometer in the 70 quart Tub to keep an eye on the water temperature which stayed at 200 degrees. The bucket was filled with water and some Dawn Dish soap and the skull was placed in the bucket. I all so put towels around the bucket and the deer skull so the water would not evaporate so fast, and the water temp would stay hot. I added water to the bucket 3 times a day to keep the water level above the skull. I started out for 2 weeks changing the water every other day. The next 2 weeks I would change the water every other day. The last week I would change the water twice a week . That would be my degreasing time. I have never had this happen to me before as I have done quite a few. I am assuming the water got too hot but am not certain. Any help would be greatly appreciated.. Not looking forward to telling the customer.