I've cared for a colony since 2003. They do well in a large damp enclosure, filled with living plants, insects, mosses, logs, bark, leaves and rocks. They like it cool, and seem to do best at temps below 80. My typical temps in the winter are 60 to 74 (90 under the Mercury Vapour Bulb), and 70 to 80 or so in the summer (95 under the Mercury Vapour Bulb). Mine are in a 90 square foot fully planted indoor enclosure, so there are various microhabitats they have found and use for various life processes. Do not overfeed, do not feed too many hard-shelled insects such as superworms, supplement living foods with calcium and multi-vitamin, mist heavily at least once daily, provide multiple sight breaks and places to climb. One of the best climbers out there, and will sit atop logs and rocks waiting for movement (food or other turtles). They have done very well, and live, breed, oviposit and hatch young all in the enclosure. I find young that have incubated and hatched in the enclosure without me knowing by chance sometimes, so the environmental conditions must be within comfortable boundaries. The neonates are very sensitive for the first 8 weeks or so.
Before any type of natural enclosure is set up, all turtles must be in good form and must have been fully treated for illness, parasites and shell problems.