The video shows a close-up view of an aquarium with a clear water level indicator. The indicator is attached to the side of the aquarium and has a tube that extends upwards, with a circular float at the top. The float is white and appears to be made of plastic. The tube is transparent and has a slight curve to it. The aquarium is filled with water and has green plants and brown rocks inside. The water is clear, and there are no fish or other creatures visible in the video. The lighting in the aquarium is bright, and the water is still, indicating that there is no current or movement.