Posted: Sat Dec 23, 2006 5:28 pm
Some live food (an earthworm or pieces of one) or something smelly (bits of tuna or sardines packed in water) often work to whet the appetite.
Since he's so small, until you get a submersible water heater (if you do), having the water level a bit deeper than the width of the shell would make it easier to heat with lighting and still be enough for the turtle to right himself if he were to tip over.
The shell in the first pic looks dried out (I'm assuming it's the white area you're concerned about), most likely from poor care.
"You become responsible, forever, for what you have tamed." -Antoine de Saint Exupery-