Water quality remediation in a fish hatchery using biological and mechanical filters

Water quality is a major factor in fish hatchery operations and management. Deterioration in the quality of water increases stress on the captive animals, reduces their growth, makes them vulnerable to disease and can cause heavy mortality. Managing water quality is important but expensive. In this study, an innovative method was developed to collectively use coral rubble, aquamats, synthetic polymers and seaweeds for maintaining the quality of water in a recirculation aquaculture system. The chemicals such as NH3-N, NO2-N and NO3-N, which originate from fish metabolic waste and unconsumed feed, were monitored to determine the effectiveness of the method used. The method was cost-effective and efficiently purged the water of the toxic wastes, resulting in remediation of water quality for the recirculating aquaculture system.


Presented in the Research and Innovation Competition of UMS 19 - 24 August 2008 (PEREKA 2008). Won Bronze Medal