Nitrospira and Nitrobacter – Eat nitrite, converting it to nitrate. Nitrosomonas – Eat ammonia, converting it to nitrite. The bacteria can be found on all different surfaces of your aquarium, but where it truly benefits your tank is in your filter media, where it removes ammonia and nitrite from your aquarium as it passes through your filter. Nitrifying bacteria require a source of oxygen, using it to convert ammonia to nitrite and nitrite to nitrate. Nitrifying bacteriaīacteria that remove ammonia and nitrite from the water There are two different categories of bacteria used in biological filtration: nitrifying bacteria and denitrifying bacteria. What types of bacteria are used in biological filtration? With enough beneficial bacteria in your aquarium, they will eat ammonia and nitrite as quickly as it is produced. That’s why they are commonly referred to as beneficial bacteria! You want these bacteria in your aquarium. Waste, such as fish poop or uneaten food, breaks down and releases ammonia.īacteria then eat the ammonia and convert it toĪnd then, another type of bacteria converts nitrite to nitrate.īiological filtration refers to when bacteria in your tank eat any compound, such as ammonia, nitrite or nitrate, and then convert it into something else. Think back to the nitrogen cycle for a moment. Now this may sound confusing, but it’s actually very simple. Mechanical and chemical filtration work by removing the unwanted stuff.īut that’s not how biological filtration works… Instead, it converts one chemical to another. Fishlab Fact: Any filter media that is designed to provide a home to the bacteria used in biological filtration is referred to as a bio filter.īiological filtration works a little differently from the other methods of filtration.
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