ADJUSTABLE FLOWRATE: This pond pump come with an adjustment knob to change the flowrate of water according to your needs. The maximum water flowrate can get to 132GPH (500L/H), and the maximum lifting height can get to 4ft ULTRA QUIET DESIGN: The fountain pump use a long lasting and reliable motor, which is very quiet when running, and the noise is less than 18 decibels, giving you an extra quiet environment. The waterfall pump is removable and can be easily cleaned without any tools SUBMERSIBLE WATER PUMP: The water pump with light attract your fish or turtles a lot as keep circulating and aerating the water. Add more O2 to water, make your creatures more health. Both water and sea water can be used. Pump equip 4 strong suction cups, very convenient and steady to install to the glass or flat. Non tool disassemble design, very easy to clean and maintenance COME WITH NOZZLES: Fountain pump is equipped with nozzle, with a diameter of 12mm (0.47in), water pump fountain water column up to