![Hikari Aquarium Solutions Bacto-Surge Foam Small Sponge Filter](http://tkaquatics.com/cdn/shop/products/s-l500_1_22dbc8ff-e71f-415f-889f-47955c121f0c_{width}x.jpg?v=1600324606)
Hikari Aquarium Solutions Bacto-Surge Foam Small Sponge Filter
- Highly porous sponge maximizes bacterial action
- Increased surface area offers maximum bacteria colonization
- Soft sponge material is easily cleaned
- Polyether foam for longer life
- Uplift tube and air diffuser combination provide maximum lift and won't easily clog
- Other uses: polishing filter for canister filter applications, hang on filter applications or uplift tubes of undergravel filters