Cascade Jets The Cascade nozzle produces a graceful conical shaped display. The water level dependent aerated display is suitable for calm to light wind conditions. Exhibits excellent light reflecting properties. The injection effect causes the surrounding water and air to be sucked in intensively and then thrown high in to the air. The water pattern changes with varying water levels, when below the standard water level the jet spray is thinner but higher, when above it is fuller but lower. When turbulence in the water surface increases these jets appear to dance, often adding interesting patterns to the on looker.