hygger See-Through Air Pump for Aquarium: Adjustable Oxygen Pump，Silent Powerful Aerator Pump 3.5W 2 Air Outlets Ultra Silent for Large Medium Fish Tank,Hydroponic Systerm, Household Commercial Use

Ultra-quiet operation & professional shock-absorbing design: Equipped with four silicone support bases and thickened shell, it effectively absorbs vibrations and significantly reduces noise transmission, ensuring quiet operation without disturbing you or your aquatic pets.

Three power options, perfect for different fish tanks: Available in 1.5W (small tank, <40cm high), 2.5W (small and medium tank, <60cm high) and 3.5W (medium and large tank, <80cm high) models, accurately meet your fish tank size needs, avoid energy waste, and ensure that both micro and large aquariums can be kept in ideal condition.

Efficient dual-hole outlet (2.5W/3.5W) & flow adjustment: Both 2.5W and 3.5W models are equipped with two outlet holes, can be connected to multiple air stones/devices at the same time, and have a flow adjustment knob to easily control the bubble size and intensity to customize the oxygen concentration.

Unique transparent shell & modern design: With transparent shell design, the appearance is novel and unique, combining functionality and aesthetics, which can be matched with many fish tank decorations to add a modern touch to your fish tank area. It is a good choice for raising freshwater fish/betta fish/saltwater fish in freshwater and saltwater aquariums.

Complete accessories, ready to use out of the box: Comes with air pump accessories, air pipe, air stone, check valve. 1.5W includes one set of accessories, 2.5W and 3.5W include two sets of accessories, ready to install and use, convenient and quick. Suitable for beginners and experienced aquarium enthusiasts looking for a low-maintenance fish oxygenation solution.

Three power options, perfect for different fish tanks: Available in 1.5W (small tank, <40cm high), 2.5W (small and medium tank, <60cm high) and 3.5W (medium and large tank, <80cm high) models, accurately meet your fish tank size needs, avoid energy waste, and ensure that both micro and large aquariums can be kept in ideal condition.