Hello, just getting ready to add water and fish to my new concrete pond. It is 8ft x 3 ft by 4 ft deep. I live near Toronto Canada so our winters are below freezing . I have a pump with pressurized UV filter. I will be running an aerator and de icer also but I have questions regarding that in another thread. My question is do I need to run my pump and filter during to winter months. I was told by my neighbour not to run pump with filter during the winter just in case the filter cracked and the pump drained out my pond water. Any thought or other tips would be appreciated.