As the title says, we just got a 120 off of CL today! We got it delivered around 5 today, (that's right, free delivery. Pretty lucky considering we have a 2 door escort) and the tank is damn near frozen. I know enough to not throw water into it right away because of the swell of the joints and glass, but I have no idea when it's safe to fill it up. I'm sure some of you northern folks have had this issue too and maybe have some idea of time frame. Thanks!