Greetings,
I am glad you have an interest in Box Turtles. They are definitely not a beginner pet, so, be sure you have the resources and the time and funding to set up the proper enclosure before getting one.
Each species of Box Turtle, and sometimes, each subspecies, has different requirements for substrate, food, water, humidity, and temperature. The first thing to ensure is that the box turtle you purchase is captive bred and captive born; this will usually appear as: CB/CB or CBB.
Stay away from wildcaught (wc or w/c) individuals since they ALWAYS have internal parasites and have not always been legally exported from the state in which they are found. In fact, there is a thriving market for turtles taken illegally in one state and launderede through another state - Texas and Arkansas seem to be the most lax in their enforcement and account for the largest number of box turtles shipped from the wild.
Next, ensure the dealer guarantees live arrival and has a health guarantee with a full money-back guarantee. Otherwise, you could end up with a sick or injured turtle you'll have to "shell" out a lot of money for at the vets.
Finally, look at the species that can survive best in your regional area so they can be kept outside for the larger part of the year.
As for caging - DO NOT KEEP BOXIES IN AQUARIUMS!!! They do not provide adequate temperature, humidity or ventilation for boxies and numerous health problems will result such as URTI, bacterial infections, shell rot and shell fungus, and possible reinfection from parasites. BTW - just because a turtle is cbb does not mean it does not have parasites - reptile parasites are passed from the mom to the embryos as they form and new babies often possess internal parasites.
The best type of enclosure is a large, square tub, low and open enough so that it allows ventilation and yet tall enough that it prevents the turtle from climbing out. Depending on the species, you may need a half-water, half-land environment or a land environment with a shallow water dish (we use film-developer trays or Eco Terra dishes for young and injured turtles). Rubbermaid produces some great tubs buit a large concrete mixing tray (available at Home Depot) is also suitable.
Preferable is an outdoor enclosure which permits the turtle to have a normal day/night cycle, ten to fifteen degrees variance in temperature, anda suitable cover (rocks, branches, logs) and concealment (loose soil, leaf litter, or detritus). Outdoor enclosures also provide the most effective UVA/UVB exposure - important for shell and bone development plus the surface helps to wear down the beak and nails reducing the need for filing or trimming.
Substrate should be sufficient for the turtle to bury itself and create a form (a house turtles live in periodically in the wild). We discourage people from using pine shavings, cedar shavings, redwood shavings, care fresh and sands - all of which will either cause respiratory distress, dehydration or gut impaction respecitively.
We generally prefer bed-a-beast (as long as it is kept scrupulously clean) and Jungle Mix. These two substrates are suitable as long as you monitor the moisture absorption and cleanliness. The depth should be suitable to allow the turtle to completely burrow and cover itself - just as in the wild. Leaf litter and artificial items can be provided to support form building by the turtle.
The turtle should have a temperature gradient in the enclosure which vaaries according to species. Generally a ten to fifteen degree variance between the cool side and the hot side (provided by overhead lighting or a ceramic heater - NOT A HEAT PAD). Many box turtles like to bask and require a spot on a dry surface where they can sit to warm up their bodies to aid in digestion, circulation and respiration. Once warmed, they will retire to a shaded area or form to hide.
The temperature range should be between about 70 degrees in the cool area up to 85 under the basking light. You can let the nighttime temperature fall to 65 degrees to about 75 degrees.
In addition to a basking light, you will need to provide your turtle with an ultraviolet light for UVA/UVB absorption. Although products such as Reptisun are generally suitable, we use the more expensive ultraviolet bulbs because they last longer and provide a greater frequency output. Do not use blacklights and don't waste your money on incandescent bulbs - the output is ineffective for turtles. The light must be no more than 18 inches above the turtle to produce effective UV wavelengths that promote vitamin D3 conversion and trigger the Pineal gland to stimulate growth, appetite, and reproduction.
Food is highly variable depending on the species. Generally, neonates and youngsters will focus almost exclusively on protein sources, that is: invertebrates, carrion (dead animals), and fish and amphibians. Expect that the youngster will ignore veggies for the first 12 to 18 months of its life. You can try to supplement with organic baby foods (without sugar or fructose additives) to help transition the turtle. Ignore the majority of prepared foods - they are a waste of money. If you really want to use prepared foods - the best on the market are provided by Walkabout Farms from Susan Donahue or Mazuri. Pretty Pets isn't bad for older turtles but then, only as a supplement.
Some turtles will transition to vegetable matter in conjunction with protein while others will remain fixated on worms, crickets, and pinkie mice. Most box turtles will willingly take these items as adults but some will take them to the exclusion of greens and fruits.
Most of the Eastern races will take dandelions, collard greens, strawberries and berries, melon, clover, and human-produced lettuces (red leaf, green leaf, romaine). Reptomin is not a bad supplement if given to the turtle as periodic alternative. It combines vegetable matter and fish protein.
Vitamin supplements such as calcium or herptevite are helpful but should not be overdone.
As for general health, you should provide a fecal sample to your veterinarian as soon as possible to look for parasitic organizms and any blood in the stool - this will tell you how healthy your turtle is. Also physically examine the turtle externally at least once a day to look for parasites, damage, puffy eyes, enlarged tympanums (ears) or prolapse (the colon, penis or cloacal lining extruding from the cloacal opening - caused by dehydration, parasites or a lack of muscle control in young male turtles).
Keep in mind that most box turtles can live to be ove 80 to 100 years old. If you ever get tired of the turtle, you cannot simply turn it loose or expect a local zoo to take it. Be prepared for taking in this turtle for the long haul or having a suitable person or organization ready to accept the animal if necessary.
You can find much more information than I have provided at a couple of sites:
Melissa Kaplans Care Pages http://www.anapsid.org/box.html
and
Boxturtle care by Andy Highfield
http://www.phy.ohiou.edu/~mash/herp/avoidbox.html
I wish you the best and if you have any more questions, please feel free to email me.
Dennis Desmond
Director of Operations
Northern Virginia Reptile Rescue
http://www.boxturtle.org

Northern Virginia Reptile Rescue