I have 2 baby turtles that are only about 2 inches and 1 of them has fungus on the botton of its neck . i don't know what to do , I was thinking about adding salt but if he drinks the water it won't be good for him and if I buy fish medicne I don't know if it would since it is a turtle not a fish . I not sure what type of turtle it is , it is the common ones you see in the petstores these days and i think the name for them is red eared soemthin or terrapin , i'm not sure . what do i do about his fugus .