What is the best way to provide an opening on the pond surface?
There are several ways of maintaining an opening on the frozen pond’s surface. However, never use physical force to break an opening in the ice. Fish are very sensitive to vibrations and hitting the ice can stun or severely injure fish. Thermostatically controlled de-icers are the ideal method. They are easy to use, energy-efficient, and maintain an opening in the ice, even in below zero temperatures. Keep in mind that de-icers are not water heaters and are not designed to raise the water temperature of the entire pond. They are designed to maintain an opening in the ice to allow proper gas exchange.