| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a water tank that realizes efficient water replacing work with a simple structure.SOLUTION: A water tank 1 or 10 comprises: a breeding container 2 or 20 that is filled with water and in which aquatic organisms are bred; and a water receiving container 3 or 30 that is formed separately from the breeding container 2 or 20 and is arranged adjacent to the breeding container 2 or 20. The breeding container 2 or 20 is provided with water ports 22 or 220 for allowing water in the container to flow into the water receiving container 3 or 30, and when a water level in the breeding container 2 or 20 exceeds a prescribed water level X, the water in the breeding container 2 or 20 flows into the water receiving container 3 or 30 through the water ports 22 or 220.</p> |
