Agri-Farm Products Pasture Trough for Water & Feed. This large 211 qt / 200 L trough holds a large volume of feed or water so you it saves you times from refilling it. If you want to keep the water level consistent, use the AFP-8075 Swimmer Assembly Float Valve including the Swimmer Box for extra protection. This 8060 Trough has UV protection in order to ensure a long life and durability. It is produced from raw material and additives that are approved for food contact.