Modular device for maintenance of water quality comprises photovoltaic modules (1) mounted on the chassis (2), battery supply system with control of charging and discharging, power supplies and control units (3) installed on chassis, buoys (4) located on the underside of the chassis, electric drive pump (5) attached to the supporting structures and connected with battery supply system and control units (3) which may be connected with the aerator (6) and the floating particle filter (7) which may or may not be connected to the device, depending on the desired function and suction basket (8) which is placed on the targeted water intake site, depending on the desired function and purpose according to the user's decision.
