Recirculating aquaculture systems (RAS) constitute a sustainable solution for the land-based production of aquatic organisms, based on the continuous reuse of water under controlled conditions. However, the performance of these systems depends strongly on the efficiency of biofilters, which are responsible for the removal of organic matter and for nitrification, processes that are central to the elimination of organic contaminants and ammonia, and that are critical for the health of cultured organisms, food safety, and product quality. The ProAqua+ project aims to develop an innovative technology to accelerate biofilter maturation, increase microbial stability, and improve biofilter performance in RAS, promoting the removal of micropollutants, the control of off-flavour-associated compounds, and the establishment of new standards of quality and sustainability in recirculating aquaculture. ProAqua+ advances the state of the art by integrating the principles of the One Health concept, broadening the perspective on sustainability in aquaculture. Through the optimization of water quality, the reduction of environmental impact, and the improvement of fish health, the project contributes to food security and the preservation of marine ecosystems, in line with the interconnection between animal, environmental, and human health.
