As the title states...I was wondering if it's safe to leave empty glass tanks outdoors over the winter. It snows here and drops well below 0C on some occasions. Not too sure if it would risk cracking in the panels or the frame.
Like Dr. Joe said, it's not worth the risk. Too many opportunities for damage. Depending on how cold, the glass might get brittle, the silicone might get damaged and something or someone might crack it. Just give me the tank, I will take care of it!!! The Doctor.