I bought it used off marketplace from a guy who had it with a kegerator. The cylinder looked brand new and unused. Filled it 3 months ago no problem, but all of a sudden it was empty yesterday so I went to fill it. The guy brought it out and said it was leaking. I could feel the gas coming out of the connection between the brass spigot and the cylinder body. It’s a 2.5 lb, and the beverage guy I refill with only has 5lb and up. Maybe I should have just bought one of his tanks, but I’m on my lunch break and barely had time to think. Just super annoyed right now since I’m leaving for a 10 day trip tomorrow morning. I think my tank will be okay, just not looking forward to the algae outbreak later.