Built-in Free Water Three-in-one Aquarium Filter — Small Submersible Aeration Pump with Powerful Filtration

Designed to simulate a natural ecological filtration system, this built-in free water three-in-one purifier keeps aquarium water clear for a long time. The unit draws water from multiple directions, creating a large filtration area that absorbs debris in the fish tank. It delivers strong filtration and water purification while promoting beneficial bacteria cultivation. The water outlet angle is adjustable: up, down, 30, left and right, 120. A detachable filter box houses large-area filter cotton and additional filter media for effective cleaning and easy maintenance.