I used Baktopur, which is a strong gram neg/gram positive anti-bacterial medication and epsom salt. It didn't help, or even slow the fish's demise. I know it's hard to let them go, but if it has dropsy and is already pineconed, there is a very high probability that you won't save it. If you do try to treat it, I would use Maracyn or Kanacyn (if you can get your hands on it).