Posted: Tue Mar 08, 2011 8:09 pm Re: Question 2 turtles
Welcome. I have to ask---what do you mean by "10 years into it?" It's never too late to improve their habitat, and correct lighting is an important part of providing a healthy environment for them. They should be able to bask under both a UVB light and heat light, especially during the winter months if it's cold where you are or they're unable to get unfiltered sunlight in warm weather. What do their shells look like? Did they regularly shed scutes when they were younger?
If you want someone to check the sex, you could post pictures of their tails (showing the undersides and the anal vents) as well as their front claws. At their age, though, the smaller one is most likely male and the larger one a female.
Does the one that latches on to the other ever break the skin or cause injury? You might want to consider separating them, especially if the harassment gets worse or the turtle being bitten gets injured.
"You become responsible, forever, for what you have tamed." -Antoine de Saint Exupery-