#$%^&*AU2019200524B120190822.pdf#####13 ABSTRACT A water circulation system (1) to emulate a natural wave motion in an aquarium includes an electric pump (2) - having a water inlet (4) and two outlets (5,6) connected to a water distribution device (3) - having two outlets (10,11). Each 5 conduit (10,11) includes a ball valve (14,15) interconnected by a stepper motor (18). The discharge bores of the ball valves (14,15) are set orthogonal to each other. The ball valves (14,15) and stepper motor (18) are interconnected to provide substantially a 90 degree step rotation to each ball valve (14,15) when the stepper motor (18) is activated. The water circulation system (1) is controlled by 10 a wireless mobile application on a smart-phone.
