Just for future reference, the recommended medication for Fin rot for Bettas now is Furan-2 or Maracyn2. Neither of these products will hurt the bettas or the biological filtration of the tank. Betta finrot just does not respond to the strict water change and clean tank method that works so well with other smaller finned fishes.
Melafix AND Pimafix are just not going to be recommended for any betta or other fish by me. I am still struggling with the aftereffects of the treatment that Marty received. I believe that he is not going to make it, and it is all so unnecessary because the medication that was supposed to be helping him backfired badly.
Rose
