Aquaculture Program

Recirculating Growout Systems

Recirculating tank systems are utilized for studies on growout of various marine finfish species, since these systems conserve space and water and permit a high degree of environmental control.Two systems are currently in operation:

Intermediate-Scale Growout
Twelve 2.7-m3 tank system used for growth studies with hatchery-reared juvenile marine finfish, including dietary protein, lipid, and energy: protein requirements for optimal growth and feed utilization efficiency.

Near-Commerical Scale Growout
Four 16.7-m3 tank system, currently being used to study production and economics of southern flounder, black sea bass and red porgy. This near-commercial scale system incorporates state-of-the-art filtration technologies developed and tested by NCSU aquaculture engineer, Dr. Thomas Losordo. The system was built by UNCW Research Associate Patrick Carroll.

System Components:

4.6-m diameter Insulated Fiberglass Tanks
Aqua Optima Double Drains and Sludge collectors
Jacuzzi Piranha 4.5 hp Pumps
P.R.A Rotofilter Drum Screen Filters
Aqualogic 4 hp Heat Pumps
Polystyrene Bead Trickling and Kaldness Moving Bed Biofilters
Fiberglass Oxygen Cones
RK2 Protein Fractionators
UV Sterilizers

intermediate scale RAS growout system pilot scale RAS pilot system overhead view Patrick teaches Honor's Biology Class

[Click any image above to view Recirculating Growout gallery.]