Aquaponic system for vegetable and fish production

The invention relates to an aquaponic facility with closed water circulation, including at least one aquaculture unit and at least one hydroponic unit, characterized in that the aquaculture unit has at least one water outlet which is functionally connected with the hydroponic unit by a one-way valve such that water from the aquaculture unit can be supplied to the hydroponic unit, and the hydroponic unit has at least one cold trap, wherein the at least one cold trap is functionally connected with the aquaculture unit in such a way that the water obtained from the at least one cold trap can be supplied to the aquaculture unit, as well as its use.