I got a betta for my office a few days ago. I have him in an Eclipse Explorer that was an old home for a betta I had that I put into a 15 gallon. Anyways, his fins were great, and still are, but I can't tell if they are growing or rotting. The rays are extened pretty far past the ends of the fins and they look a bit ragged and with my experience of fin rot doesn't it look like the whole fin just melts away? How do betta fins grow? Is it the rays shoot out and fin grows between them? Would it me wise to get some Maracyn-Two and use it or am I over-reacting?