Title:

Jackson Estuarine Lab: Recirculating Aquaculture System

The Jackson Estuarine Laboratory (JEL) at Adams Point is undergoing major renovations, including repurposing an existing greenhouse to house a recirculating aquaculture system (RAS) for research, teaching, and aquatic species production. This project designs a modular RAS capable of supporting up to 2,000 fish within the available space. Influent water from Great Bay exhibits seasonal variability in salinity, turbidity, and pathogen levels, requiring pretreatment through filtration and UV disinfection. System design requirements were determined by analyzing species growth, oxygen demand, and waste production for steelhead trout and striped bass under maximum growth conditions. Components were selected based on spatial constraints and key hydraulic and biological criteria, including filtration performance, head loss, and retention time. The final design includes two independent RAS, each with four replicate tanks to allow for experimental control. The estimated construction cost is $64,000, with daily operating costs of approximately $17. The system supports up to 1,554 steelhead trout under design conditions and provides a controlled, efficient platform for aquaculture research and production.

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