The utility model relates to a power-off and restart device for an aquarium filter.The utility model relates to a water inlet chamber and a water filtering chamber which are separated from each other by a partition in the interior of the body.The lower part of the water inlet chamber is provided with a motor.And internally connected with a water conduit,Among them,The partition between the water inlet chamber and the water filtering chamber of the body is provided with a narrow and circuitous flow channel.And make the water flow of the flow passage smaller than the water flow of the water diversion pipe；In this way,After the motor is cut off and stopped,The water in the filter chamber is slowly returned to the water inlet chamber through a narrow and circuitous flow channel.To supplement the water in the inlet chamber,When the motor resumes operation,The water in the aquarium can be immediately pumped into the water inlet chamber for circulating filtration.And prevent the motor from overheating and damage due to idling.The utility model can ensure the normal filtration and prevent the damage of components.一種水族過濾器斷電再啟動裝置，其係於本體之內部以隔板分隔出相通之進水室及濾水室，該進水室之下方係裝設有馬達，並於內部連通有引水管，其中，該本體之進水室與濾水室間的隔板係設有狹小且迂迴曲折之流道，並使該流道之水流量小於該引水管之水流量；藉此，於馬達斷電停止作動後，使濾水室之水液經由狹小且迂迴曲折之流道緩慢回流至進水室，以補充進水室之水液，當馬達恢復作動時，即可立即將水族箱內之水液抽入進水室而進行循環過濾作業，並防止馬達空轉而過熱損壞，進而達到確保恢復正常過濾及防止元件損壞之實用效益。
