hi
i have 2 torties

both live outside in the summer at night they have a heated shed to sleep in.
during the winter they go in a heated cage you know like a rabbit goes in , they have a heat lamp on which they can go and sit under in one part of the cage ...
not a viv , viv's are dangerous as the produce to much humidty for torts ...if you buy a tort get it from a breeder.
have a look on
Tortsmad : Tortsmad they will help you
ems x