As the aquarium is a closed system any dirt and waste remain in the aquarium, and without our intervention it will quickly become a poisonous sewer.
This is where your filter proves itself one of the most essential piece of equipment in your fish tank.
It acts like a mini sewerage treatment works, cleaning up the aquarium water through several methods:
This traps dirt particles and needs monthly cleaning to remove the dirt.
Friendly bacteria live in and on the ceramic media and process the waste compounds to prevent them poisoning the fish. See Understanding the Nitrogen cycle.
Water movement helps add essential oxygen to the water and removes carbon dioxide.
So, take good care of your filter as it is the life support of your aquarium.
Our top tips for good filter care:
For more information, check out our video: