Dynamic modeling of the INAPRO aquaponic system

The use of modeling techniques to analyze aquaponics systems is demonstrated with an example of dynamic modeling for the production of Nile tilapia (Oreochromis niloticus) and tomatoes (Solanum lycopersicon) using the innovative double recirculating aquaponic system ASTAF-PRO. For the management and control of aquaponic systems, as dynamic two player systems with intra and inter feedback characteristics, dynamic models are required. In this study, it is shown how dynamic models based on differential equations for diverse aquaponic processes, such as crop and fish growth, waste production and filtration, greenhouse climate and hydroponics, can be integrated to a realistic and complex aquaponic model. The proposed models have been implemented in VBA Excel and can be used to demonstrate how different ASTAF-PRO configurations can be found, controlled and managed, increasing the chances of understanding and therefore future large-scale production in environmentally sustainable aquaponic systems.