They were all lost because of the heater failure, the betta developed Dropsy, used the Epsom salts to bring down the swelling, but he died a few weeks later, it obviously damaged him internally, the angels just died, no symptoms.So sorry old hen. Hate when these things happen. None of my goldfish have come down with it yet, but I'm sure I'll eventually have to deal with it. My heaters seemed to be quitting constantly. It was a consistent cycle until I stepped up and found a new system that has worked well so far. How did you lose your betta? Old age? Sorry for your loss.
Regards,
Leaf
Edited for grammar