The concept of our project is to imitate and fully automate a closed circle as in nature. We start with an aquarium with some fish. Instead of filtering the aquarium with a classic filter system we use a vegetable garden to filter the wastewater. The waste of the fish becomes the manure for the vegetable garden. The vegetables will filter the water and this clean water will return into the aquarium. If we adjust the size of the vegetable garden and the flow of the recycling water to the amount of fish in the aquarium we can create a perfect environment for both fish and vegetables. We can eat the produced fish and the vegetables from our project. Our project will be automated as much as possible, and you will be able to interact with the aquarium via an app on your phone or another device.