biological filtration

Biological filtration is a natural process in aquariums where beneficial bacteria break down waste products like ammonia and nitrites, which are harmful to fish. These bacteria colonize filter media, such as sponges or bio-balls, converting toxic substances into less harmful compounds like nitrate. This process helps maintain a healthy environment by keeping water safe for aquatic life. Regular biological filtration is essential for maintaining stable water quality, supporting the nitrogen cycle, and ensuring the well-being of fish and other aquatic organisms.