To my surprise this little pump did an awesome job. As I am preparing for the upcoming swimming pool season I always attempt to get the inside of the pool very clean as possible. Every couple of years I drain my pool completely and replace with clean fresh water. When doing so, in the past I’ve syphoned the water out of the pool. My pool holds 10,000 gallons of water. So I thought I’d give this pump a try and see how it worked. Now it’s February so the water is still very cold at the time I did this. I attached a 100 ft garden hose to the pump. From the pool I stretched the garden hose away from my neighbors driveway so it wouldn’t wash away the gravel or cause any ruts in the neighbors driveway. I pulled the cover back off my pool and lowered the pump to the bottom of the pool. Plug it upped and let it do its thing. I wasn’t in a real big rush to drain the pool, so I would check it occasionally to see if the water level was dropping. No it isn’t the fastest pump in the world but to cut to the chase, it drained every bit of the 10,000 gallons leaving about a 1/4 of an inch if not less in the bottom of the pool. Just enough water for me to mop up the bottom of the pool. This has been the easiest clean up of my pool prior to pool season in the last 13 years. Just because of this little pump. I would recommend this to anyone especially if it is used to drain a swimming pool or a hot tub.