LANDEN Stainless Steel Lily Pipes are machined from high-quality stainless steel for rugged durability and easy cleaning, and the low-profile matte finish also prevents scratches to ensure long-term use and value. The size of the inflow pipe's filter hole is precisely calculated to ensure that small debris is cleaned while large debris does not clog the pipe, while also ensuring the safety of smaller freshwater fish and shrimp. The elbow that can be rotated in all directions allows the water to reach all directions smoothly, allowing nutrients and gases to be evenly distributed in the aquarium, providing a healthy and ideal growing environment for aquatic organisms. The complete accessories and easy installation allow you to get started quickly and hassle-free. Different tank wall thicknesses can find matching inflow and outflow pipes in LANDEN.