Exceptional Compatibility: Our pool fountain comes with three versatile adapters, ensuring a seamless fit for a wide range of pool types. It's perfectly compatible with inground pools, Fun-sicle pools, Summer-Waves pools, and In-tex pools. The diameter of the regulator is 1.73 inches, while the diameters of the three adapters are 2.28 inches, 2.75 inches, and 3.2 inches. Please confirm that the adapters are suitable for your pool before placing an order | Customizable Waterfall Experience: Enjoy 360° adjustable height and direction for the waterfall. With two different waterfall styles - crossing and parallel, you can rotate the pipe and nozzle to create the exact water display you desire, adapting to various pool sizes and shapes | Easy Installation: Installing our pool fountain is a breeze. Simply turn off the pool pump, remove the existing nozzle, connect the fountain, and turn the pump back on—all in less than 5 minutes, without the need for extra tools. Moreover, you can achieve control over the water pressure and fountain height | Cool and Enjoy: Chill out in your pool with our fountain. It can lower water temperature by 6 - 10 degrees, perfect for hot days. The flowing water makes a soothing sound, great for relaxing. It not only provides a refreshing swimming experience during hot summer days but also creates a visually appealing display | Distinctive Design: When installing a fountain, one needs to ensure that both sides of the nozzle's spray area are above the water surface. In order to avoid the situation where the installation fails, our fountain is designed to be taller than other pool fountains | Notice: The valve adjusts water pressure (not fountain on/off). The leak-proof rubber ring increases friction, so turn with moderate force. Ensure it’s correctly positioned to avoid deformation/detachment from forced twisting；The pool must be filled with water to at least 80% capacity before installing the fountain