A modular, vertical bioreactor system includes a plurality of vertical bioreactor chambers each of which encloses an interior volume and has a height dimension which is greater than its width dimension； a drain manifold which maintains the bioreactor chambers in a spaced apart relationship and defines a fluid channel which is in fluid communication with each of the vertical bioreactor chambers； and, a fluid delivery assembly which delivers a fluid to each of the bioreactors. The system may be reconfigured so as to accommodate varying applications. The system may be integrated with an aquaculture system.
