Update...
I'm really frustrated atm and maybe someone can help shed some light on what's going on. I decided to move the fish around again rather than give them to my lfs. I had raised the twins from tiny babies, and I wanted to see if things could work. I put the least aggressive twin back in the tank and things were fine. My largest, most fav angel stayed out of the corner, was eating and seemed perfectly fine again. Long story short, after a few days the angel seemed to be getting thinner again, so I moved him back in the QT tank. I treated him with API General Cure, he seemed great and was eating really well again, fattening up and looking great. Yesterday I had even decided to add him back to the main tank when I out of the blue I noticed he was floating around the tank like he had no control and he refused to eat. He's doing the same thing this morning, so I decided to treat with Prazipro. The only thing I've done differently is feed Hikari frozen bloodworms. I realize that fish get sick, but I have never had any issues like I'm having with these Petsmart angels. I've never had any live over a year and a half. Could it be poor stock? How would they live a six months, a year, or like this one, a year and a half then get sick out of nowhere? Could it be the bloodworms? I've had a fs owner tell me they were junk and to not offer them, and I've heard from folks who have had no problems. I know this is a long post, but I'm tired of these angels dying when the rest of my fish are fine. Any input would be appreciated.