3W 300L/H Water Flow Aquarium Filter Internal Filter for 40L Aquariums Aquarium Pump Filter with Filter Sponges for Fish

【Multifunctional Aquarium Filter】: Our aquarium filter has four main functions: water pumping, oxygenation, filtration, and circulation. The aquarium pump can be used for both freshwater and saltwater aquariums. This filter can effectively remove pollution from aquarium materials to create a healthier environment for aquatic organisms.

【Adjustable Water Flow】: This internal aquarium filter has a maximum flow rate of up to 300 L/H, which is very suitable for aquariums up to 40L. It has a unique design that allows you to adjust the water flow through the inlet pipe located on the side of the aquarium filter, thus providing oxygen to the aquarium.

【Two Operating Modes】: The aquarium water pump has two operating modes. You can increase oxygenation through the water inlet pipe and nozzle, or you can use the rainwater connection hose to improve filtration and filter the water more thoroughly. When the water level is low, the filter can be placed on its side underwater for use in the turtle aquarium. 【Easy to Install and Clean】: There are several rubber suction cups on the outside of the aquarium filter, making it easy to install inside the aquarium. The suction cups have strong suction, are secure and stable, and won't slip easily. The built-in filter cotton can also be easily replaced by simply removing the outer casing. 【Important Note】: The rain mode and oxygen mode cannot be used simultaneously. When using the rain mode, please adjust the water volume to avoid excessive water flow and harming the fish. Size: 3.3*2.7*12.3 cm Note: All data is measured manually; please allow for a 1-3 cm error due to differences in lighting and display. There may be slight color variations; please refer to the actual item received.