This Ring Jet creates a stunning visual effect for your pond or water garden, while also adding a valuable aeration function for a healthier pond. Attach optional telescoping risers and fountain heads to the center of the Ring Jet to create a wide array of stunning effects. The performance of the Ring Jet is directly affected by the GPH pumped through the fountain head. For a higher and wider spray pattern, a higher GPH/PSI pump is required. 21 jet nozzles with O-Rings and a plastic male pipe plug. Adjustable nozzles direct spray pattern outward, in-ward or in a spiral pattern.