You can also use a smaller one like this , it's about 22" L by 12" W by 7" H. Corner of the lid is cut out to be as an entrance, it's filled most of the way with sand [ or use sand + topsoil mix, dampened ] This can be set in her tank.
Mirage came out of brumation on April 26. He was doing great. On May 2 he started acting funny. We just redid his tank, and he keeps going into one of his hides. He just lays there. He shows no intrest in food. HELP!