Diy Tortoise Enclosure Outdoor . A glass tank is not the best option for indoor housing. However, minimally, you’ll want to provide small species with about 16 to 32 square feet of space, and large tortoises with five to 10 times this much. Tortaddiction Outdoor tortoise enclosure Version 2.0!!! from tortaddiction.blogspot.com Sometimes, when the weather is nice enough, we like to take the tortoises outside but don’t. Diy outdoor tortoise mini enclosure. A designated indoor setup such as a tortoise table is an ideal.