【Adjustable Water Flow】This aquarium pump with an adjustable knob allows you to easily adjust the flow rate. Max. Flow: 3000L/H, H-Max. (Lift Height): 3m, 65W high efficiency motor. 【20-30dB, Noise Reduction Design】Designed with pure copper wire motors, which are highly energy-efficient and provide a quiet and pollution-free environment. The sound during working is about 20-30dB, and lower than 40dB, which will keep your mind at ease without disturbing the outside world. 【Multi-function and Three Nozzles】Equipped with three nozzles, one is 1.3cm in diameter, the other is 1.6 diameter, the rest is 1.9cm in diameter, providing different water flow effects. 【4 Strong Suction Cups】The bottom of the submersible water pump is equipped with four powerful suction cups, ideal for vertical and horizontal mounting. 【Detachable and Cleanable】No tools needed to detach, easy to separate, easy to clean. Perfect for aquarium, tabletop fountains, water gardens and hydroponic systems, etc.