A filter box structure for aquarium has a box body,There is a chamber inside,A partition structure is arranged to separate the chamber into a preparation area and a filtering area；The partition structure at least includes a first partition near the preparation area and a second partition near the filter area,And the first partition and the second partition are respectively connected to the two opposite side walls of the box body,To form a flow channel between the two diaphragms；The flow passage is provided with a first connecting port connected with the preparation area at the bottom end of the first diaphragm,And at the top of the second partition is provided with a second communication port connected with the filter area.Thus, the flow passage between the two diaphragms forms a buffer structure before the sewage enters the filter area, so as to slow down the impact force of the water flow.一種水族用過濾箱結構具有一箱體，其內部有一容室，且設有一區隔結構以將此容室區隔形成一準備區及一過濾區；此區隔結構至少包括有一靠近準備區之第一隔板及一靠近過濾區之第二隔板，且第一隔板及第二隔板分別連接於箱體之兩相對的側壁上，藉以在兩隔板之間形成一流道；其中此流道於第一隔板之底端設有一連通於準備區之第一連通口，且於第二隔板之頂端設有一連通於過濾區之第二連通口。藉此，兩隔板之間的流道形成汙水進入過濾區之前的緩衝結構，以減緩水流的衝擊力量。
