The video shows a person cleaning a fish tank. The person is using a brush to clean the sides of the tank and a vacuum to clean the bottom of the tank. The water in the tank is clear and there are no fish visible in the video. The person is wearing a green shirt and is standing in front of the tank. The tank appears to be large and rectangular, with a black frame. The brush used for cleaning is blue and the vacuum is white. The person is methodically cleaning the tank, moving the brush and vacuum in a circular motion to ensure all areas of the tank are cleaned.