The Airmax EcoSeries Premium Nozzle is made to be used with the EcoSeries Display Fountain. It offers unique choices for the pond owner. The Single Arch Spray Pattern has heavy streams providing a formal visual display and soothing ambiance. The Double Arch pattern provides two overlapping arch patterns to create a stunning visual presentation, which is a perfect fit for larger ponds. The Double Arch & Geyser pattern combines the overlapping double arch with a gushing center geyser to create an awe-inspiring display.