Cover pumps are an essential pool closing accessory if you own an inground pool or an above ground pool. Cover pumps sit atop your winter pool cover and pump water off of its surface after it reaches a certain level. This alleviates stress and weight off of your pool cover as snow falls and melts throughout the course of the winter.
Swimming pool cover pumps also add a measure of safety for wintering an inground pool by eliminating the need to knock heavy snow off the cover yourself. You simply wait for the snow to melt, and let the safety cover pump do the rest of the work.
If you are just learning how to close an inground pool, or are an expert on how to open an above ground pool, the best way to close a pool always involves a pump for solid winter pool covers.