🐠 HITOP Aquarium Bio Sponge Filter Set with 3W Air Pump - Ideal for Fish Tanks up to 30 Gallon Review

[HITOP upgraded aquarium sponge filter] Compared with traditional sponge filter, it has a transparent shell, and the impurities adsorbed on the sponge will not fall into the water due to impact. This fish tank bio sponge filter needs to be connected to an air pump of more than 3W to operate. It is recommended for fish tanks under 30 gallons. [3 filter spaces] This aquarium bio sponge filter has 3 filter spaces, and we equipped with 3 filter sponges. The space on the left and right sides can be used for physical filtration, and the circular space in the middle can be used for biological filtration using filter sponges or ceramic rings. The filter effect will be better. [Innovative filtration design] After connecting to the air pump, the airflow drives the bottom rotor of this aquarium filter to rotate, then the water enters from both sides. When flowing through the filter sponge, the impurities in the water will be adsorbed on the filter sponge, complete filtration. [Height adjustable and add oxygen] The height of the outlet pipe of this aquarium filter can be adjusted. It can be installed with an extended outlet pipe or directly installed with a lotus leaf-shaped outlet. The shape of this outlet can effectively increase the amount of dissolved oxygen in the water, making this filter not only plays a role in filtering, but also can add oxygen to the fish tank. [Easy to operate] This aquarium sponge filter is equipped with 3 filter sponges, which can be used directly. It is enough to rinse off the attached impurities with fish tank water regularly. In addition, equipped with 4 powerful suction cups, the filter can be firmly fixed in the fish tank without falling off due to the vibration of the airflow.