In early Sept this year, I had a fiberglass inground pool installed. I'm located in western new york and was wondering if I can just put the safety cover on and let the filter pump run on low speed just to slowly keep the water moving all winter long, instead blowing out and plugging the lines? I've been told moving water wont freeze. I have a cartridge filter and would remove the filter cartridges and let the system slowly/continuously circulate till I'm ready to reopen in spring. Has anyone done this before?