Fine-Pore Aquarium Sponge Filter, Easy Flow Water Circulation for Bettas, Fry, Shrimp and Slow-Moving Fish

This fine-pore aquarium sponge filter polishes aquarium water while the Easy Flow accessory increases water circulation. Its air collar produces smaller bubbles for improved performance, and the reusable sponge provides dependable filtration without moving parts or replacement cartridges.

Gentle operation makes the filter suitable for betta fish, baby fry, shrimp and other slow-moving species. The complete filter remains inside the aquarium and runs from an external air pump connected through airline tubing.

Key Features

• Fine 40 ppi sponge helps polish aquarium water; the porosity rating is approximate and can vary between manufacturers.
• Easy Flow accessory increases water circulation, while the air collar creates smaller bubbles for improved performance.
• Reusable construction requires no replacement cartridges and can last for several years when maintained as directed.
• No moving parts in the filter itself support straightforward, hassle-free operation.
• Available in Nano, Small, Medium and Large sizes for different aquarium setups.

Specifications

• Color: Black.
• Filter style: Air-driven aquarium sponge filter.
• Pore size: 40 ppi; this measurement is approximate.
• Sizes: Nano, Small, Medium and Large.
• Required additional equipment: Air pump, airline tubing and a check valve. The check valve helps prevent aquarium water from flowing out when power is off.
• Installation: Adjust the curved Easy Flow tube so its opening sits one-third above the water and two-thirds below it. Shallow tanks may require trimming the uplift tube.
• Cleaning: Enclose the sponge in a bag or pitcher before lifting it from the aquarium to catch loosened debris. Remove the foam, squeeze it in aquarium water, refresh the water and repeat until mostly clean. Scrub the air collar to clear debris or algae, then reassemble and reinstall.

Pair the filter with the required air equipment, position the curved tube correctly and clean the sponge in aquarium water to maintain reliable, gentle filtration.