NICREW Aquarium Internal Filter, Submersible Power Filter with Multiple Function for Fish Tanks 2 to 5 Gallon, 40 GPH, 3.5W

Provides effective and thorough biological filtration, creating superior aquarium water environment
Fine filter foam trap debris and fish waste, absorb odors
Enable to generate abundant air bubbles and water flow, optimal for oxygen supplement and water circulation of aquarium
Equipped with adjustable air regulator that distributes a gentle flow of water, making it safe for delicate fish or shrimp
Quickly assembles and disassembles, comes with four suction cups for secure in-tank installation, suitable for both freshwater and saltwater tanks