Aqua One Filter Air 15

Sponge filters work by drawing aquarium water through the porous sponge. This provides mechanical filtration by trapping physical debris, and with its large porous surface area provides a home for beneficial, nitrifying bacteria, which break down biological waste into less toxic elements.

Sponge Filters are great for:

Fry tanks
Betta bowls
Shrimp tanks
Hospital/Quarantine tanks
New aquarium start up
Pre-filter for canisters
Benefits of the Aqua One Sponge Filters:

Suction caps to fix filter to the back of the tank
Easy to assemble
Available in a range of sizes
Simple to maintain
Safe to be used with baby fish of any size
Can be operated with an air pump
Adjustable height