A kind of aquatic-organism cultivates energy saving device, is by water tank on one, once Rose Box, multiple box for breeding and a circulation line form. Circulation line includes the pump and multiple tracks pipeline of the water of an extraction lower header.Wherein, the first operating mode: first pipeline one end is communicated with pump, and another end connects below upper water tank side, and installs bypass branch pipe, penstock, decision systems operating mode additional in pipeline. The normal mode as, water do not enter water tank, do general circulating filtration.Second of operating mode: second pipeline one end is connected with pump, another end connects upper water tank, and one third control valve is set in the second pipeline, the water of lower Rose Box is guided to squeeze into water tank, with the first piping connection Hou, the bypass branch pipe of installation is flowed into, each box for breeding is made it into, water to be overflowed imports collector pipe, into lower Rose Box.When the water of upper water tank reaches full-water level, suction pump will stop acting, and water flows to box for breeding Hou Rose Box in the case where importing and water pipe enter by branch line； And when the water of upper water tank reaches low water level and what high water level at lower Rose Box, suction pump acts immediately, and the water of lower Rose Box is transported to upper water tank by the second operating mode of pipeline row again, is so continuously circulated, and thereby reaches the purpose person of whole power saving.一種水族生物養殖節能省電裝置，係由一上儲水箱、一下過濾箱、多個養殖箱及一循環管路組成。循環管路包括一抽取下水箱的水的泵，以及多道管路。其中，第一種運作模式：第一管路一端與泵相通，另端連接上儲水箱側邊下方，並在管路加裝旁路分支管、水閥門，決定系統運作模式。如一般正常模式，水不進入上儲水箱，做一般循環過濾。第二種運作模式：第二管路一端與泵相連，另端連接上儲水箱，並在第二管路設置一第三控制閥，引導下過濾箱的水打入上儲水箱，與第一管路連接後，流入加裝的旁路分支管，使其進入各養殖箱，待溢出的水導入集水管，進入下過濾箱。當上儲水箱的水達滿水位時，抽水泵便會停止動作，水藉由分支管路流往養殖箱後在導入及水管而進入下過濾箱；而當上儲水箱的水達低水位而下過濾箱處於高水位時，抽水泵即立即動作，將下過濾箱之水再藉由管路行第二運作模式輸往上儲水箱，如此持續循環，藉此達到整體省電之目的者。
