Unfortunately I don't have room for a larger tank as I am in a dorm:( When i go home for the summer I have a larger tank waiting for them. They have a basking area and a place for them to hide. I only have a flourscent light but i put them at the window everyday to get direct sunlight, and I usually spot them basking when I do that. I try to look too often because they get scared and go to their hiding spot. No water heater either

The sun usually heats it to about 78 or so.
The tank is filled about 3/4 with water with a floating basking spot. Underneath their is a cave they hide in. I have a fake plant that they like to lay on the leaves or hide under. There basking spot that floats is new so they are still getting used to it. the water was lower and they would go on top of their cave. There is no filter but i take out any thing that my little net can fish out. I know I should have a better setup but i can't get it at the moment
I feed them reptomin baby. they have a good appetite and sometimes i worry that i am overfeeding them. I only feed them once a day around 8pm. I have been putting food in the water and on their basking spot to get them to go up on it more. and they seem to get up and eat it.
I had stopped the sulfur dip and the spots on little guy have gotten worse over that time. so i am going to start that again and see if it works. I have been looking on previous posts for the same symptoms but I haven't had luck yet. There are alot of posts.
How bad does shell rot smell? I read that one case smelled really really bad, but the entire shell looked like it had been rotting for awhile and had progressed really far. Does the smell vary? Is there anything to compare it to?