The video shows a fish tank with a blue light on the top. The tank is filled with water and has a filter attached to it. The filter is turned on and is actively filtering the water. There is a person's hand visible in the video, pointing to the filter and the water flowing through it. The person's hand is also seen touching the water, indicating the clarity and cleanliness of the water. The video is shot in a well-lit room, and the fish tank is placed on a table.