I've determined that I will be keeping the baby box turtle I found outside, so the next step is to build him an enclosure. I spent a lot of time reading today and think that I am going to start out with a smaller enclosure and then increase it after he grows past the juvenile stage. I looked around and found a 40 gallon stock tank that I could use to make a pretty decent-sized enclosure for him. Is that too big for a baby? The measurements are 38"L x 27"W x 13"H, due to its beveled shape it is probably closer to 24"W after the depth of substrate. I know babies can be sensitive to environmental changes and that is why they are usually kept in smaller quarters, but I wanted your opinion.