In the video, a person is using a white net to clean the bottom of a fish tank. The fish tank is filled with water and has various green plants and white rocks inside. The person is using a metal stick to hold the net and is moving it around to clean the bottom of the tank. The water in the tank is clear, and the plants are healthy and vibrant. The white rocks are scattered throughout the tank, and the person is carefully cleaning around them. The metal stick is silver and has a long handle, making it easy for the person to reach the bottom of the tank. The net is made of a fine mesh material, allowing small particles to pass through while catching larger debris. The person is wearing a blue shirt and is focused on cleaning the tank thoroughly.