While it is generally not a good idea to completely drain an above-ground swimming pool, there may be situations, such as extreme algae infestation, that require water drainage. In this case, you can use a submersible sump pump to drain the water from your pool and allow you to clean and refill it. You will also need a large water hose that fits on the sump pump discharge to direct the discharged pool water.
Determine a proper location where you can drain the water. Always drain water into a sewer drain or sewer port if you do not have an outside area that can properly absorb the water volume.
Attach one end of the water hose to the sump pump discharge.
Situate the other end of the water hose in the sewer drain or drainage area.
Lower the sump pump into the deepest end of the pool.
Plug in the sump pump and allow it to drain your above-ground pool.
Straighten the water hose as water fills it to allow for smooth water flow.
Monitor the drainage process. This may also be a good time to clean and hose down your pool as the sides and bottom become exposed.
Unplug the sump pump and remove it from the pool once drainage is complete.