A basic siphon involves a tube and two containers for water exchange. The container that receives the transferred water should be placed on a lower level than the one being withdrawn from, while the tube itself should be slung over an elevation or simply held up to allow the decrease of atmospheric pressure in that section which is responsible for the liquid being pushed through the tube. In other words, to successfully start a siphon, you should always make sure the end of your siphon is lower than the source, in this case, the pool cover. To begin removing water from the pool cover via siphoning, first take a suitably long hose or a bendy plastic tube and fill it with water by submerging it in the water that’s gathered on your pool cover. It is important to keep the water inside, so when you take out one of the tube’s ends, use your finger to plug it so it doesn’t leak. Often you would also need to keep the tube from floating up from the pool cover, so it is best to secure it with a weight of some sort. Then extend the other end over the lip of the pool and down while still covering it with your finger. Once you have positioned the other end of the tube at a lower point than that of the pool cover water, you can remove your finger. The water will start flowing from the pool cover and into the previously arranged container over which you should be holding the tube. Even if your pool is located in a flat or low-set area, a correctly arranged siphon can still push the water in an upward motion as opposed to a basic draining process. As long as the end of your siphon tubing is lower than the water source, it should create an uphill flow without any electrical assistance.