Corner Bio Sponge Air Driven Aquarium Filter #15
Excellent for breeding setups. Just attach a source of air to the top of the sponge filter and the built-in diffuser will evenly filter the water through the sponge and up the lift tube. Creates an excellent source of biological filtration. The weighted base stops it from floating to the top of the tank. The internal strainers snap together and are made from a durable flexible plastic for longer life. The 15 is good for tanks up to 15 gallons.
Specifications
| Dimension | Height with lift tube: 6.25″ |
|---|---|
| Dimension | Sponge height: 3.25″ width: 2.25″ |
| Dimension | Lift tube: 2.25″ |
| Dimension | Weighted base: 2″ diameter |
| Dimension | Base of filter to top of sponge: 4″ |
FAQ
What is the maximum tank size suitable for this filter?
This filter is suitable for tanks up to 15 gallons.
How does the air flow work in the filter?
Air is attached to the top of the filter, and the built-in diffuser spreads the air evenly to push water through the sponge and up the lift tube.
Is the sponge filter easy to clean and maintain?
Yes, the internal strainers snap together and are made from durable flexible plastic, making them easy to clean and long-lasting.

Blake Cameron –
Great for a breeding tank. The filter works smoothly with a small air pump. Water flow is consistent and the sponge stays clean after a few weeks of use. The weighted base keeps it in place without floating.
Maria Avery –
Works well in a 12-gallon tank. The air diffuser distributes water evenly. I like the compact design and it fits perfectly in the corner. Cleaning is simple and the sponge holds up well.
Owen May –
Perfect for a beginner. Easy to set up and maintain. The biological filtration helps keep water clean and stable. No issues with clogging or leaks after two months of use.