All-in-one filtration and aeration solution for your aquarium - Multi-functional filtration: combines biofiltration, mechanical filtration, aeration, and oxygenation in a single unit to improve water quality for both freshwater and saltwater tanks. Safe for fry and small inhabitants, while keeping the water clear and natural. - 80 ppi fine sponge with two 9-layer ribbed sponges: high-density, fine sponge design provides excellent mechanical filtration without pulling in young fish. The two sponges offer increased surface area for beneficial bacteria, promote good water flow, trap debris and fine particulates, and help maintain crystal clear water closer to natural conditions. - Easy to use and quiet: no separate air stone required. connect an airline hose to the air pump and to the sponge filter’s air inlet. bubbles are minimized, delivering a single solution for filtration and aeration. the water outlet is retractable and rotatable for flexible positioning. - Easy to clean and maintain: all parts are removable. remove the sponge from the filter, rinse and squeeze it in used aquarium water. weekly and regular cleaning of the sponges is recommended. - Tank size and setup: suitable for tanks up to 75 gallons. comes with 2 media chambers, allowing you to add biomedia or activated carbon (not included) to enhance biofiltration and overall water quality. - What you get: 1 x dual sponge filter (two media chambers), media not included; 1 x retail packaging bag. Use scenarios - Community freshwater tanks up to 75 gallons requiring reliable filtration and good aeration with fry-safe operation. - Planted tanks needing gentle filtration and high surface area for beneficial bacteria, with the option to add biomedia or carbon for improved water quality. - Light to moderate bioload saltwater setups that benefit from combined filtration and aeration in a compact, quiet unit.