For a superior swim-in-place experience, look no further than the iconic Endless Pools® Swim Machine. That's because Endless Pools uses a custom-made, hydraulically powered propulsion system that creates a laminar current of up to 5,000 gallons per minute (GPM) that is wider than your body and deeper than your stroke. Multiple conditioning grills smooth and redirect the water, resulting in a swim current that is free of turbulence. Even at full power, it feels like swimming in open water.