The principle of aquaponics clearly defined

It is one of the big topics in sustainable food production: aquaponics—the combination of fish farming in aquaculture and plant cultivation in hydroponics. That is the short definition. What convinces consumers is the resource-saving approach that saves water, energy and artificial fertilizer. That is the theory. Missing or vague definitions and standards make it difficult to plan and evaluate plants properly. Researchers led by the Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB) have now tightened up the definitions and created a calculation model for resource use. They argue that the coupling of internal flows, for example of water, nutrients and energy, must be evaluated. After all, it is the cycle idea that ultimately makes aquaponics sustainable.