< Topic >Without using the air-supplied pump it is possible to incorporate the oxygen and the like in the air to the water inside the tank, and also, being clean in the eye which was seen, it offers the multi-stage type admiration service water vessel which can enjoy also flowing water sound.SolutionsAt least, the tank of three or more is connected, the storage tank 10b which makes height identical and second tank 10c of the height whose just specified height is lower than first tank 10a is connected by the said first tank 10the tank of the basis of necessary height as a first tank 10a, the front step tank compared to makes the multi-stage type structure which is connected when height of the next step tank gradually has become low after said second tank 10c. You draw up on top of storage tank and 10b have pumping installation 20, the said draw pumping installation 20, as it has the water absorption flexible pipe 22 which stretching is done for lower part of the device itself, has the freeing port 23 which drainage of ponded water is done for the flank to inside first tank 10a, on contact surface top of the front step tank and the next step tank, the water inside the front step tank can have the floodgate 14 which, drainage of ponded water it can point to inside the next step tank becomes the configuration which is communicated with the lowest step tank and the storage tank with water flow flexible pipe 16.< Choice figure >Drawing 1【課題】送気ポンプを使用せずに空気中の酸素等を水槽内の水に取り込むことが可能であると共に、見た目に綺麗で流水音をも楽しめる多段式観賞用水槽を提供する。【解決手段】少なくとも三以上の水槽が連接され、所要高さの基本の水槽を第一水槽10aとして、該第一水槽10aには高さを同一とする貯留水槽10b及び第一水槽10aよりも所定高さだけ低い高さの第二水槽10cが連接され、該第二水槽10c以降に前段水槽よりも次段水槽の高さが徐々に低くなる状態で連接される多段式構造とする。貯留水槽10bの上部には汲上ポンプ装置20を備え、該汲上ポンプ装置20は、装置本体の下部に延伸する吸水パイプ22を備えると共に、側部に第一水槽10a内へ落水する放水口23を備え、前段水槽と次段水槽との隣接面上部には、前段水槽内の水を次段水槽内へ落水させる水門14が備えられ、最下段水槽と貯留水槽とが通水パイプ16により連通した構成となる。【選択図】図1
