Box Turtle. Do they shed...

I found this online so I can't comment on its veracity:

Skin shedding:
A little peeling occasionally is fine. Turtles shed their skin like
other reptiles, but more continuously. Mine usually shed more for a
while, then less or not at all. As long as the shed sking is thin
and tranlucent, and you don't see anything unusual on the skin, and
the shedding is not excessive, don't worry. If the shedding is continuous,
or the skin looks sore or red, or the shedding is very heavy, you may
have to deal with a skin fungus. Have your turtle checked by a veterinarian.
You may also soak the turtle in an idodine solution twice a day for
15 minutes and keep it warm and dry outside the water overnight for a while.

Shell shedding:
Turtles shed occasionally the outermost layer of their scutes. They are
thin, translucent scutes. If the whole scute is shed and the bone becomes
visible, or if shedding is continuous, you may have a fungus problem and
should have your turtle inspected by a veterinarian. As an immediate
measure, remove the turtle from the water except for a 30 minute bath
twice a day; keep it warm and dry; soak twice a day for 15 minutes in
iodine solution or sponge off with Nolvosan.