Aquarium Sponge Filter & Replacement Sponges (Air-Driven)

A gentle, air-driven sponge filter that provides biological and mechanical filtration without strong currents — a favorite for betta tanks, shrimp, fry, and quarantine setups. Choose a complete filter unit, or stock up on replacement sponges for the unit you already run.

• Complete units include sponge, uplift tube, and weighted base
• Requires an air pump and standard airline tubing (not included)
• Models A-180 through C-380 for nano to mid-size tanks, plus slim D-2835 / E-2836

Rinse the sponge in removed tank water during water changes to protect the beneficial bacteria colony.