Pawfly Aquarium Hang On Filter for Small Tanks up to 5 Gallons

First, always remove the sponge before filling the aquarium hang on filter with water. Next, add water until the level reaches close to the filter outlet. Finally, power on the filter, wait for it to function properly, then insert the sponge. (NOTE: Inserting the sponges first will block the outlet of the water pump, causing slow water intake and loud noise.)

This aquarium hang on filter effectively traps debris or wastes and accumulates nitrate, thanks to its 2 bio sponges for double filtration. It provides both mechanical and biological filtration to fully remove harmful substances.

The telescopic oil film skimmer can automatically float to the water surface and rotate 360° continuously with water flow, greatly absorbing oil film on the water surface and keeping your fish tank crystal clear, aerated and healthy.

Featuring a compact and delicate body, this fish tank HOB filter is hardly noticeable when hung on the tank wall, making it perfect for nano aquariums up to 5 gallons. With noise less than 30 dB, it operates in extreme quietness, causing no disturbance at all.

Equipped with a rotatable knob on the water inlet, the water flow rate can be freely adjusted as needed. A small waterfall from the filter outlet keeps the water circulating, greatly increasing oxygen solubility and enlivening the aquatic lives.

product information: