I've been reading the forums and other sites about shell rot and fungus. I'm not sure if my turt has either. For awhile he was getting these dark green spots on his shell that looked like algae. I periodically take a toothbrush and scrub that stuff off gently, but they reappear.
When changing his water, I realized when he "dries out" his shell look white (kind of like ash or dry skin). I also put a new piece of cork bark for his basking area and I've noticed a HUGE increase in his basking time. Before the cork bark, I had rocks he climbed on. I don't know if this "increase" in basking is do to the fact that he really likes this cork bark, he has gotten use to the house and my roommates (had him about 10 weeks now), an increase in water makes him more tired and thus needs to bask/rest more, or he is trying to heal his "shell problem." By the way, his shell appears hard, but I'll double check.
He's about 3 inches long gets feed about 8 pellets of Rep Cal daily, has heating and UVB lights, eats veggies often. I do use API Tap Water Conditioner (chlorine remover), but I make sure it's well mixed in before he goes in. Pictures are below.
Here are my questions:
1) What are these spots? How should I treat him?
2) Do I need to get an ammonia killer too--like Ammo-Carb?
3) At first he tried to eat the cork bark, but after awhile he stopped. Is this normal? Should I remove the cork bark? I got it because people were saying that their turtles were eating the Styrofoam turtle docks. I'm trying to avoid that.






