Good news, guys! Thanks to your help, my betta is on his way to recovering. Not only does it seem like he has/is getting his slime coat back, and the hole in his fin is closing up, but his colors are brighter, and he seems to be getting better coloring to. The only thing I'm concerned about is that he seems to be eating less. Also he likes to wedge himself between his rocks at the bottom on the tank. He has done this before, the first time he did it, it scared me to death, but is this normal for bettas to do?