Filter Medium

Definition: Filter medium refers to the material inside aquarium filters that serves as a surface for beneficial bacteria to grow. These bacteria play a crucial role in the nitrogen cycle, breaking down harmful substances like ammonia into less toxic forms.

Function in the Aquarium: Imagine your aquarium filter as a microbial home. The filter medium provides a cozy space for good bacteria to live. These bacteria help keep your aquarium water clean and safe for your fish by breaking down waste and other pollutants.