NOVELTY - The tool comprises an electric motor (1) having a shaft (11), a gear box (3) equipped with a shaft (31) and swivel arms (32) that are attached to end of motion pulleys and placed on axes of the motor, a coupling unit for connecting the electric motor shaft and shaft gear box using a clamp fastener, a wheel includes eight fingers, attached blades and stem, reduction pulleys, a bearing mounted on ends of a rod, and a connecting belt to connect the reduction pulley with a pulley-pulley motion. The tool generates water currents at speed of 9-12 cm/seconds.    USE - The tool is useful to maintain water quality in an aquatic organism cultivation by creating the flow of water (claimed), where the aquatic organism is fish and shrimp.    DETAILED DESCRIPTION - The tool comprises an electric motor (1) having a shaft (11), a gear box (3) equipped with a shaft (31) and swivel arms (32) that are attached to end of motion pulleys and placed on axes of the motor, a coupling unit for connecting the electric motor shaft and shaft gear box using a clamp fastener, a wheel includes eight fingers, attached blades and stem, reduction pulleys, a bearing mounted on ends of a rod, and a connecting belt to connect the reduction pulley with a pulley-pulley motion. The tool generates water currents at speed of 9-12 cm/seconds. The positions of the shaft of the electric motor and shaft of gear box face to each other. The gear box reduces the rotation speed of an electric motor with a ratio of 1:60. The coupling unit is present in the form of woven hose rubber-coated steel wire. The reduction pulley is bigger than the motion pulleys. The blades have dimensions of 15 cm and a length of 20 cm, and are mounted on an upper end of the radius. An INDEPENDENT CLAIM is included for a method to maintain water quality in an aquatic organism cultivation using the tool.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of a tool.    Electric motor (1)    Gear box (3)    Shaft of motor (11)    Shaft of gear box (31)    Swivel arms. (32)