The Hygger Aquarium Biochemical Sponge Filter is a simple, low-maintenance filter for freshwater aquariums that provides 3-in-1 filtration: mechanical filtration, biological filtration, and aeration. The sponge traps debris and uneaten food while the built-in ceramic bio media provides a home for beneficial bacteria that help keep your water clean and balanced. At the same time, the rising air bubbles increase surface movement to improve oxygen levels. Its gentle flow makes it a great choice for shrimp, bettas, fry, quarantine tanks, and other aquariums with delicate livestock. Easy to set up and maintain, the sponge can be removed and rinsed with aquarium water during routine cleaning to keep the filter performing its best. The ceramic bio media continues to support beneficial bacteria over time, helping maintain stable water quality. Available in 3 sizes, the Hygger Aquarium Biochemical Sponge Filter is an excellent primary filter for nano and breeding tanks or supplemental filtration for larger planted aquariums. Simply connect it to a compatible air pump (sold separately) to get started! Key Features & Benefits: Mechanical & Biological Filtration – High-density sponge traps debris while ceramic bio media supports beneficial bacteria for cleaner, healthier water. Gentle Water Flow – Air-driven design provides low-current filtration that's ideal for shrimp, bettas, fry, and other delicate livestock. Improves Oxygenation – Increases surface agitation to help promote healthy dissolved oxygen levels throughout the aquarium. Quiet Operation – Powered by an air pump (sold separately) for reliable, low-noise performance. Easy to Maintain – Removable sponge can be rinsed and reused for simple routine maintenance. Safe for Small Livestock – Sponge intake helps prevent shrimp, fry, and other small inhabitants from being drawn into the filter. Available in 3 Sizes – Suitable for nano tanks, breeding setups, quarantine tanks, and a variety of freshwater aquarium sizes. Product Specifications Small Dimensions: 2.9 x 4.4" Application: 20 Gal Recommended Pump Size: ≥ 1.5W Medium Dimensions: 2.9 x 6.5" Application: 20-55 Gal Recommended Pump Size: ≥ 2W Large Dimensions: 3.94 x 7" Application: 55-125 Gal Recommended Pump Size: ≥ 5W
