hygger Aquarium Double Sponge Filter Super Biochemical Filter Sponges for Aquarium Fish Tank Up to 210L Aquarium Filter with Media Container for Fish Tank Oxygen Increasing and Cycle (Filter)

Sponge filters provide both mechanical and biological filtration -- Provides the ideal location for bacterial colonization and the sponge traps larger waste particles mechanically cleaning the water without trapping baby fish Double 10-layer ribbing shape sponges design -- it quickly established a bio-filter and extra oxygen, two sponges means more surface area for beneficial nitrifing bacteria to colonize and faster cycling, keeps your fish tank water super clean and crystal clear It has a media container with ceramic bio filter media inside, will help to remove harmful substance and provide extra cleaning power. it also comes with 4 sponges, you can replace the filter media to enhance water quality Easy to use: using an air hose, connect one end to you air pump and the other end to this filter. The water flow exit tube on the sponge filter is adjustable so you can change direction and height of the water flow ?Max Tank Size: 210 Liter?Comes with 2 suction cups to stick to glass, can be installed anywhere,it can also be used as a prefilter or secondary filter; perfect for shrimp tank, betta tank, breeder tanks, turtle tank, goldfish, discus, crayfish, fry, baby fish or other fish.