So, I have an update, and not necessarily a good one.

I got home from work a few minutes ago, and my frog is staying at the top of the tank. It looks like it has some skin hanging off of it, but the concerning part is that I noticed one of his legs is a tad red. Is this the red leg that I've heard about, and is it too late to do anything about it? This must have sprung up overnight, because I didn't notice it yesterday.