Aquascape®️ 53040 Medium Pondless®️ Waterfall Kit 16' Stream with 3-PL 3K Pump. A Pondless Waterfall is simply a re-circulating waterfall or stream without the presence of a pond. The waterfall works by pumping water contained in a large, in-ground reservoir up and through the Waterfall Spillway, allowing the water to flow back down into the reservoir. This simple recirculation system requires very little maintenance, is easy to install, and ideal for families with young children or pets that love to play in water. Learn more about Aquascape Pondless® Waterfall kits below!