I came home tonight to no CO2 bubbling, and when I opened the pantry closet I found a big puddle of water with my regulator lying in the middle of it, next to the now-empty tank. I had just filled the tank on Monday. The threaded collar on the regulator sheared off above the threads, which is sort of scary. It was from Red Sea. Anyone ever have this happen? I think next time I will get one that is all brass, from a welding shop. But first I have to replace a light fixture on the same tank; it died sometime yesterday. Why did I think that once a tank is set up, it wouldn't keep costing money?!? Grrr.