Features: <br> <br>Ultra-thin design, save space inside the aquarium tank, more beautiful. <br>Comes with filter sponge, bio balls, air stone inside, more surface area for beneficial bacterial to colonize and faster cycling, keep your fish tank clear and clean. <br> <br>Easy to set up: simply install an airline into the unit and turn on the air pump, great way to clean and oxygenate your tanks; Easy to clean: simply squeeze the sponges in tank water. <br> <br>Easy to use: simply place it anywhere at the bottom of aquarium <br>Suitable for shrimp tank, betta tank, breeder tank, goldfish, discus, guppies, fry, baby fish or other fish. <br> <br> <br>Specification: <br> <br>Material: Plastic <br>S: (Dia*H) 8*5.5cm / 3.15*2.17 inch <br> <br>L: (Dia*H) 10.5*5.5cm / 4.13*2.17 inch <br> <br> <br>Package List: <br> <br>1 x Aquarium Filter <br> <br> <br>Note: <br>Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.<br>1、Ultra-thin design, save space inside the aquarium tank, more beautiful. <br>2、Comes with filter sponge, bio balls, air stone inside, more surface area for beneficial bacterial to colonize and faster cycling, keep your fish tank clear and clean. <br>3、Easy to set up: simply install an airline into the unit and turn on the air pump, great way to clean and oxygenate your tanks; Easy to clean: simply squeeze the sponges in tank water. <br>4、Easy to use: simply place it anywhere at the bottom of aquarium <br>5、Suitable for shrimp tank, betta tank, breeder tank, goldfish, discus, guppies, fry, baby fish or other fish.