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Sponge filters are a biological filtration that builds up a colony a good bacteria that breaks down the ammonia and nitrite as water passes though them and also collect detritus to help keep a clean aquarium.

Uses air via a uplift system to draw water through the sponge. A low wattage air pump using air system and doubles oxygenating the water.

• Biological Filtration
• Air Driven
• Sponge size 4cm X 4cm
• Suitable for Aquariums up to 8 litres