Filling stations often stop activities after 4pm. Your grill will run out of gas at 4:30pm. Round's will exchange your tank until 6pm on the weeknights, 5pm on Saturdays, 10am to 3pm on Sundays. These hours are subject to change. Bring in your old tank. Leave it at the Blue Rhino Cage. Pay in the store and we will be out to swap your old tank. Don't have a tank? We will sell you a filled Blue Rhino tank to get you started. Blue Rhino tanks include more than just propane. Every tank is cleaned, safety and leak checked, and includes important safety information. When necessary, tanks are refurbished and outdated parts are replaced, extending the useful life of each and every tank. Then we deliver these tanks to a store near you, so it is convenient and ready whenever you need fuel.