AQUANEAT Double Bio Sponge Filter Quiet Aquarium Filter with Ceramic Media Balls Airline Tubing and Valves Air Pump Driven for Betta Fry Shrimp Tank -Large Up to 75 Gal-

Features: Biochemical Filtration?Sponge filter provide both mechanical and biological filtration, also, the air infusion chamber produces minute bubbles which increase the oxygen solubility New Design: two media containers with ceramic ball inside to accommodate bacteria necessary for biological balance; You can also replace this ceramic media with other media Easy to Set up & Clean: Simply install an airline and an air pump into the unit; Easy to clean, just rinse and squeeze in used aquarium water Excellent for small size fish like dwarf cichlid, guppy, killifish etc, or for hatcheries, shrimp tank, maternity tanks, betta tanks, and fry tanks, as the filter produces minimal current and has almost no way to suck the fish through the filter Includes: 1 piece of filter How Does It Work? A sponge filter uses bubbles of air from an external air pump, or an integral water pump to draw water through the sponge. As water is drawn out through the lift tube or pump, it is replaced by water entering the sponge. The surface of all the bubbles or pockets in the sponge provides a bed for the bacteria of a biological filter. What Maintenance Does It Require? The sponge will need to be rinsed every time it becomes dirty, about once every 2 to 4 weeks. It is recommended to replace the sponge once every three to six month or when the sponge gets worn out