Biofilters function by providing a medium for nitrifying bacteria to colonize. These bacteria oxidize ammonia (NH₃) into nitrite (NO₂⁻) and subsequently into nitrate (NO₃⁻), processes that are less toxic to aquatic life. The design of biofilters ensures adequate surface area for bacterial growth and may incorporate features to supply necessary oxygen levels, as nitrification is an aerobic process. Proper management of biofilter conditions, including pH and oxygen levels, is essential to prevent system crashes and maintain water quality.
Integrating biofilters into aquaculture systems in Hobart enhances water quality, supports healthier aquatic life, and promotes sustainable practices, contributing to the efficiency and success of aquaculture operations.