Serenity Bio-Foam Sponge Filter Medium up to 150L

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. Simply connect to a air pump (Not included).