PROBLEM TO BE SOLVED: To provide a breeding aquarium device in which a sediment discharge port is opened and closed with the breeding water overflowing from a breeding aquarium, and the filth precipitated in the bottom part is properly removed from the breeding aquarium, and thereby the management is easy.SOLUTION: A breeding water 15 returned to a breeding aquarium 2 from a buffering aquarium 8 with a pump 9 overflows at the breeding aquarium 2 and accumulates in a water storage part 7. An opening/closing member 5 and a water shutoff valve unit 10 open the sediment discharge port 4 when the water storage part 7 moves downward using a hook-shaped supporting point 6 as a rotation center. The breeding water 15 of the breeding aquarium 2 rolls up the filth 19 and is discharged from the sediment discharge port 4. In this way, when the opening/closing member 5 opens once, the breeding water 15 in the breeding aquarium 2 decreases while the breeding water 15 is not supplied to the water storage part 7, and the opening/closing member 5 opens furthermore and the inclination of the water storage part 7 is increased. Finally, the breeding water 15 of the water storage part 7 falls to a buffering aquarium 8 vigorously, and then the opening/closing member 5 is closed down and the clean breeding water 15 always circulates from the buffering aquarium 8 to the breeding aquarium 2, and thereby it is suitable for breeding the breeding organism preferring the clear stream such as fireflies.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】飼育水槽から越流した飼育用水で沈殿物排出口を開閉し、底面部に沈殿した汚物を飼育水槽から適切に除去し、管理しやすい、飼育水槽装置の提供。【解決手段】ポンプ9でバッファ水槽8から飼育水槽2に戻された飼育用水15が飼育水槽2を越流して貯水部7に溜まり、貯水部7がフック状支点部6を回転中心として下動すると、開閉体5及び止水栓部10が沈殿物排出口4を開放し、飼育水槽2の飼育用水15が汚物19を巻き込み沈殿物排出口4から排出される。このように開閉体5が一旦開くと、貯水部7への飼育用水15の供給がないまま、飼育水槽2内の飼育用水15が減り、開閉体5が更に開き、貯水部7の傾きが大きくなり、最後に、貯水部7の飼育用水15がバッファ水槽8へ勢い良く落下した後、開閉体5が閉鎖し、清らかな飼育用水15がバッファ水槽8から飼育水槽2に常時循環し、ホタル等の清流を好む飼育生物の飼育にも適している。【選択図】図1
