Clean the filter, pump, and skimmer- Remove any debris and clean the skimmer basket. Remove any other floating debris left in the skimmer before replacing the basket. Remove any unused chlorine from the chlorinator. Cartridges and D.E. grids should be cleaned thoroughly and rinsed clean with a garden hose. If you own a sand filter, set your filter valve to backwash. Your sand filter should be backwashed to get all remaining dirt and grime out of the filter. Your filter should take about 2-5 minutes to clean. You will be able to see the water get clean using the filter's sight glass. Once the filter has been cleaned, you can clean out the pool pump. With your pump shut off, remove the pump lid and pull out any leaves and large debris from the pump basket.