L. Dediu (2019). COMPARISON OF AMMONIA REMOVAL IN RECIRCULATING AQUACULTURE SYSTEM USING NITRIFYING BIOFILTER AND ZEOLITE. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th International Multidisciplinary Scientific GeoConference SGEM2019, Ecology, Economics, Education and Legislation, 3-10. https://doi.org/10.5593/sgem2019/5.2/s20.001