How big is your turtle? About 5"
How long have you had it? Since Tuesday of this week, but I bought him from someone else. He is 2 years old.
What is the water temperature? 82
Did you use a thermometer? Yes
Are you using a water heater? Yes
How much water is in there? It's a 50 gallon tank... a little over half full.
Are you using a water conditioner? Yes
Are you using any filtration? Yes
What is the basking temperature? I have no idea.
Is there a basking light? Yes
Is there a basking platform that is easy to climb on? Yes, although I don't think his previous owner used it correctly. It has become too small for both of my turtles to climb onto it, so I had to put a large rock on it to keep the dock buoyant.
What kind is it or what is it made out of? It's a turtle dock... not sure what it's made of but you can buy them in stores. It has suction cups.
Is there a UVB light? Yes
What have you been trying to feed it? ReptoMin and carrots, so far
When was the last time your turtle ate? This afternoon
How big is the tank/pond/enclosure? 50 gallons
Is the tank near a window? It's under a window, but the window has been closed. It was not near a window at its previous owner's home.
Is the tank in a room with a lot of activity? Yes
Have you read the Basic Care section? On the actual website, yes.
Have you searched the forums for similar situations? Yes
Is there any other unusual activity/symptoms? He has a white/clear "fuzz" coming from his arms, legs, and neck. It is only visible underwater. Also, it appears that he has a small cut on the back of his leg.
Note: When I bought the turtles, the previous owner told me that the male turtle had shell rot when it was younger, so it is missing a bit of his shell near the leg with the cut on it.
I don't know what's wrong... I have searched Google and have come up with no answers.

