⭐ Key Features

•【Space‑Saving Design】Multi‑layer sponge design expands surface area for improved filtration performance. Its quarter‑cylinder shape minimizes tank‑space occupation and leaves more swimming room for your fish.

•【Changeable Filter Media】Features two types of replaceable filter media: 3 reusable sponges and 1 bag of ceramic filter balls. The sponges are washable and reusable.

•【Easy to Use】Connect with a 4 mm air tube: attach one end to your air pump and the other end to this aquarium filter. The outlet height is adjustable, allowing you to alter water‑flow direction and height. (Air pump and air tube are not included. Please select a suitable powerful air pump according to your tank size.)

•[Bubble Filter] Powered by an air pump, this sponge filter delivers mechanical filtration to trap fine debris for effective water purification. Water flow is regulated by air output, generating plenty of bubbles to boost water oxygen levels.

•【Size】3.6 × 5.8 Inch, Includes 3 Replacement Sponges & 1 Bag of Bio Filter Balls.suitable for 3‑20 Gallon fish tanks.

🛠️ Specifications

• Brand : Carefree Fish
• Size : S(20Gal)
• Material : Other
• Unit : 1 Count
• Color : Black
• Item highlights : Space‑Saving Wall‑Mount Design，Gentle & Quiet Operation，Oxygen Boosting for Saltwater & Freshwater（Air Pump Sold Separately）
• Package quantity : 1
• Pattern : Air
• Target audience keyword : fish
• Type : PET_SUPPLIES
• Item dimensions : H: 5.8 / L: 3.6 / W: 2.0 (Weight: 0.06)
• Package dimensions : H: 2.2 / L: 7.7 / W: 4.2 (Weight: 0.4)