We had our in-ground pool closed yesterday with a solid cover and water bags. The pool person recommended a pump for removing water from the top of the cover. I looked at some in the pool store and they seem a bit expensive?? Can you use a pond or fountain pump from Home Depot? Is the pump really necessary and do you leave it out there all winter long? Some pumps were automatic and some were not??? I'm just not sure what to do! Thanks for your help!