i dont know what it is it is big thow oh and the house is like half a foot hight i would show you but i dont have a picture when i get my fil developed i will show you i am very comfuseing some times i get mixed up in what i say so sorry if i am makeing no since
It's probably a 50 gallon tank. My friend has a society of hermit crabs in a 50 gallon tank, and it sounds like what you have. I would think tanks would get too hot for rats. Wire cages are open and better ventilated.