A kind of structure-improved of aquarium,It is to include: a bottom space,System is to raise relatively large marine organisms； One headspace,It is to raise compared with small-sized marine life； One dirty things tapping equipment,It is setting what bottom space,It has a guide wire,And headspace can be imported； One filter device,System's setting what headspace,There is pore thereon,It may filter that the dirty things that dirty things tapping equipment discharges； One supporting body,In system's setting what headspace； And a tapping equipment,It is setting what headspace lower section,And headspace can be discharged in dirty things； By so designing,The dirty things that large ocean biology is drained can be directed in the filter device of headspace by dirty things tapping equipment,Dirty things can not pass through the pore of filter device and stick together on what,The dirty things sticked together can feeding small-sized marine life,And the purpose that resource reclaim symbiosis and aquarium do not change water throughout the year can be reached.一種水族箱之改良結構，其係包含：一底部空間，係用以飼養較大型海洋生物；一頂部空間，其係用以飼養較小型海洋生物；一穢物排放裝置，其係設置於底部空間，其具有一導引管，而能導入頂部空間；一過濾裝置，係設置於頂部空間，其上具有細孔，可過濾穢物排放裝置所排放之穢物；一承載體，係設置於頂部空間內；以及一排放裝置，其係設置於頂部空間下方，而能將穢物排出頂部空間；藉由如此之設計，大型海洋生物所排泄之穢物可以被穢物排放裝置導引至頂部空間之過濾裝置內，穢物無法通過過濾裝置之細孔並黏著於上，所黏著的穢物可餵食小型海洋生物，而能達到資源回收共生及水族箱常年不換水之目的。
