Aquarium Biological Filters

Aquarium biological filters are critical for a healthy aquatic ecosystem, as they provide a place for beneficial bacteria to thrive and process waste products. These bacteria convert harmful ammonia produced by fish waste and decaying organic matter into nitrites, and subsequently into less harmful nitrates in a process known as the nitrogen cycle.

Biological filtration media includes materials like ceramic rings, bio-balls, sponges, and porous rocks, all of which have a high surface area for bacteria to colonize. The effectiveness of biological filtration is determined by the amount of media and the flow rate of water through the filter, which should provide sufficient oxygen for the bacteria to perform their work.

When setting up biological filtration, it’s important to give the bacteria time to establish a colony, a process known as cycling the tank. This can take several weeks, during which water parameters should be carefully monitored. Once established, it’s crucial to maintain the biological filter by avoiding over-cleaning and using dechlorinated water for rinsing media, as chlorine can kill the beneficial bacteria. By ensuring a robust biological filtration system, you can create a stable and healthy environment for your aquarium inhabitants.