Features
- Provide both mechanical and biological filtration.
- Simply install an airline into the unit and provide both aeration and filtration for your fish. Aerobic bacteria colonize the sponge providing a bacterial substance to facilitate the nitrogen cycle.
- The sponge traps waste particles mechanically and cleans the water without trapping baby fish.
- Product dimensions: 2.0"D X 4.75"H. They are useful for as breeding filter or as secondary filter. Or they can be used as pre-filtration unit by fitting to an external or a top filter.
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