I see nothing wrong with bringing an outside tortoise indoors to the closet for the night.I will graduate to the green house thing as they get bigger, I think it's a great idea. Thanks.
Can you (if you have the time and don't mind) comment on the idea of keeping them in a heated/warm room/closet in their own plastic covered containers with deep substrate that is damp at night? No food no water bowls etc.
They have lots to do during the day, good areas to cover, plants/weeds and funs stuff to feed on, and plenty of sun if they want it. Soaked daily too.