Steven D. Van Gorder

Filtration Techniques For Small-Scale Aquaculture In A Closed System

Recirculating 2271-liter culture systems were designed and evaluated as potential fish production units. System components include a culture tank, sedimentation basin, and a biological filter. Three different biological filter types were compared: a commercially available plastic filter media, a rotating biodisc filter, and a submerged gravel filter. Each duplicated system was stocked with 5 cm fingerling channel catfish, lctalurus punctatus, which were fed daily. The experiment continued until maximum loading capacities were attained. In the 155 day growing period, the greatest standing...