DONGKER Slim Aquarium Filter, 250L/h 2.5W Hang on Back Filter Ultra Quiet Adjustable Flow for 2 8 Gal Aquariums Tanks

TIPS:Must Pre-fill Water Before The First Use,suitable For: 2~8 Gallon Small Micro Desktop Freshwater and Seawater Fish Tank Aquarium Protable :Not Occupy the Space Inside the Tank, and the Water Inlet Flower Basket Prevents the Inhalation of Fish and Shrimp.Wide the Water Outlet, Increase Oxygen and Slow Down the Water Flow Rate Aquarium External Waterfall Filter: Simulates the Natural Waterfall Flow, Quiet Operation With Adjustable Flow, Circulates and Filters Impurities in the Fish Tank to Increase Oxygen, Cleans the Water Quality and Reduces the Frequency of Water Changes Easy To Use: USB Power Interface, Can Be Connected to the Mobile Phone Power Plug (not Included in the Package), Mobile Power Supply, USB Socket Power Supply (output Voltage DC 5V/2A) SHOP WITH CONFIDENCE: To Provide You With the Highest Quality Service, If You Have Any Question, Please Contact Us.We Will Provide After-sales Service .