I have a bit of the same problem with my galvanized one. I think the spring is too stiff to release from the opening when the outside wall is slid over the inside so it never really opens up. Maybe it's bent, i haven't checked it yet but will have to do before it starts freezing again.
I like to use the plastic ones in the summer with ACV, but in the winter I need to be able to set the waterer on a heated base so I use the galvanized ones for that.
I like to use the plastic ones in the summer with ACV, but in the winter I need to be able to set the waterer on a heated base so I use the galvanized ones for that.