Hi in a year and a half i'm going to adopt or tortoise and i keep hearing about how they have to go outside. however the enclosure i'm gonna build will be pressed up against a window, so surely the vitamin d should reach him. he will live in a shed outside that will also be used for my new rabbit rescue. the enclosure will be 9ft square. the shed will have heaters, a vent and screen doors that can help cool down the shed in the summer. i will also have heat lamps and Uvv lamps in his enclosure. the tortoise will be a hermann tortoise. so does it matter that he wont go outside?