Posted: Sat Dec 30, 2006 4:52 pm
In the large pic of the female, the shell looks like it's showing the effects of rather poor living conditions (the male's is probably similar, although with the small pic, it's really hard to see). The shell is hard, even where the areas are white? It would be good if you got a nice soft brush and cloth and did a bit of gentle shell cleaning---remove the algae and see if the white that's under the right marginal scutes comes off. If they were living in hard water, the white could just be mineral deposits. You could also try gently rubbing the area with a bit of white vinegar on a q-tip---if it starts to come off, it's mineral deposits. Will those scutes that are lifting come off? If you try to remove them and there's resistance, just leave them.
You could also give them a bath in aquarium salt and water, it won't hurt them, and would help if they had any minor fungus.
Can you post another pic of the shell dry after you've cleaned it?
If they weren't receiving great care before you got them, it just make take time in an improved habitat and with a better diet for their shells to improve.
"You become responsible, forever, for what you have tamed." -Antoine de Saint Exupery-