Aqua Fur Discs - These water retention disks are a great option for elemenating gnats and other water related issues. Aquafur Discs are recylced from water bottles and woven together to form a mesh pad providing a moist sponge that sits under the plant to allow for proper plant uptake. They are a great addition to any watering routine, adding oxygenated space for the plant to obtain the best absorbtion environment. They usually hold around 16ounces of water and are placed between the original grow pot and the decorative container or saucer. These discs are also helpful in regulating water and allowing for the plant to use what is needed.