Bio Sponge Filter Air Pump Driven 10 or 20 Gal Breeding Fry Betta Shrimp Fish Tank Aquarium (Ship from CA USA) (Large 3-Pack)

Sponge filters are great for any size aquariums which provide both mechanical and biological filtration. Good to use in both fresh and saltwater tanks.

• Sponge filter is good for aquarium and provides both mechanical and biological filtration. The air infusion chamber produces numerous minute bubbles which promote gas exchange and increase dissolved oxygen level in tank water.
• Just connect the unit with an air pump thru airline tubing and provide both aeration and filtration for your tank.
• These sponge filters do not trap fish fry and are safe for small size fish like dwarf cichlid, guppy, killifish, etc. They are useful for as breeding filter or as secondary filter. Or they can be used as pre-filtration unit by fitting to an external or a top filter.
• Two sizes of filter available - Small and Large. (1) Small filter Dimensions: 3.0"D x 6.5"H - Recommended tank size up to 20 Gal; (2) Large Filter Dimenons: 4.5"D x 8.0"H - Recommended tank size up to 40 Gal.