The plain fishing urn (full) is an item made by filling a plain fishing urn while catching fish. It can be teleported to Ernie by clicking it, giving 500 Fishing experience.
You can hold up to 10 Plain fishing urn (Full), but you cannot start another plain fishing urn until you drop or gain experience from them. A full urn can also be given to Ernie manually by using the item on him, or through a chat option while having a full urn in the inventory. Full urn can also be teleported automatically by toggling the auto teleport current skilling urn when full option on under skilling options in miscellaneous gameplay settings.
Players can also use an urn enhancer unlocked at level 24 Invention to get 25% more experience.