In the fish breeding/plant breeding/watering system claimed, these are installations which consist of a lower part with an upper part mounted thereon. In the lower part, fish are bred in axially or transversely erected water flow ducts. These flow ducts communicate with one another so that fish can be transferred from one duct into another and sorted out. The fish ducts draw their water from a central water supply pipe which runs through the axial centre of the lower part, from where water branches run to the fish ducts and also to the plant trays attached and mounted above the fish ducts. The fish-breeding water is guided to the outside from the closed installation, by means of pipes, and passes either directly onto plantations or first into water basins which are composed of special shaped stones, where the water is prepared. In this case, these basins also communicate with one another. Sand-washing installations are also provided. Residues in the fish-breeding water do not run off into natural waters without previously having been prepared and cleaned; such residues are re-used either for breeding feed fish or as fertiliser for plants. The water quantities necessary for the watering of plants in the plant trays are connected to a circuit system, are thus likewise reprepared and are likewise under control. Original abstract incomplete.
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