Sponge filters provide mechanical and biological filtration - Traps floating debris without being sucked in by your fish and provides the ideal location for bacterial colonization. Sponges are high density porous and 80 ppi fine Double ribbed 7-layer foam, it quickly establishes a bio-filter and more oxygen, two sponges means more surface area for beneficial nitrifying bacteria to colonize and cycle faster, keeping your aquarium clear and clean Works great with no noise, the air and water outlet is adjustable so you can change the direction and the height of the water flow, in addition, you can add a small bio holder inside for more cleaning power Easy to install: air-powered sponge filter, very quiet , using an air hose, connect one end to your air pump and the other end to this filter, and equipped with a check valve on the air hose, to prevent water backflow and air pump damage due to power failure, great way to clean and oxygenate your tanks. see. Easy to clean: just squeeze the
