Discus - Swim bladder problem

I found my completely healthy dominant discus unable to swim. this fish went from being completely healthy to this state overnight(without) any prior sign of illness. This was a clear case of swimbladder problem. I tried treating with Epsom salt and high temperature (90F) for 24 hours with no sign of improvement indicating that this is bacterial. After 24 hours, I switched to antibiotic treatment Furan-2. On day 2 I could see a clear pinch on the stomach - sign of deflated swim bladder.