Hi, I'm pretty new at the newt thing. I originally had 2 firebelly newts. One died of what appeared to be a white infection on his foot, which eventually fell off, then he died. While his foot was injured he didn't eat either. Now, a few months later, I've got one newt and added a little albino frog in my tank - and my newt has a foot injury/disease. He isn't eating. What is going on here?