PROBLEM TO BE SOLVED: To provide a water fall model for water tank having novel and visionary water fall scenery.SOLUTION: A water fall model for water tank includes: a lower side rock wall arrangement object 1 arranged in a water tank a lower water fall flow path 18 arranged on a surface of the lower side rock wall arrangement object 1 a lower water fall circulation pump P1 lifting a large number of flowing particles 6 flown down along the lower water fall flow path 18 to an upper edge of the lower water fall flow path 18 an upper side rock wall arrangement object 2 arranged above the lower side rock wall arrangement object 1 an upper water fall flow path 28 arranged on a surface of the upper side rock wall arrangement object and an upper water fall circulation pump P2 causing water W in a water tank A to be lifted to an upper edge of the upper water fall flow path 28 and causing the water W to flow down along the upper water fall flow path 28. A throw-down position of the water W thrown to a water surface from the upper water fall flow path 28 is arranged so as to correspond to the upper edge of the lower water fall flow path 18.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】斬新かつ幻想的な滝景色を有する水槽用滝模型を提供する。【解決手段】本発明の水槽用滝模型は、水槽内に設置される下側岩壁状設置物1と、前記下側岩壁状設置物1の表面に設けられる下滝流路18と、下滝流路18に沿って流下した多数の流動粒子6を下滝流路18の上端まで上昇させる下滝循環ポンプP1と、下側岩壁状設置物1の上に設けられる上側岩壁状設置物2と、上側岩壁状設置物の表面に設けられる上滝流路28と、水槽A内の水Wを上滝流路28の上端まで汲み上げて、その水Wを上滝流路28に沿って流下させる上滝循環ポンプP2とを備える。上滝流路28から水面に投下される水Wの投下位置が、下滝流路18の上端に対応して配置されている。【選択図】図1
