Melafix is only good when fins are growing back healthy to keep them from getting infected.
I agree to what she has to say about melafix.
This is taken from the article.http
/www.petfish.net/kb/entry/335/
Important Medication Note
Many Petstores will try to sell you a product called Melafix or Bettafix for the treatment of Fin Rot. In my personal experience, neither of these products (which actually have the same active ingredient, Melaleuca or Tea Tree Oil) will help with the treatment of true Fin Rot. They may help regrow fins damaged by Fin Rot once the bacteria is killed off, but they are not the right type of medication to actually "cure" Fin Rot. Treating with either of these products may stop the advance of the rot, but once you stop treatment it is almost guaranteed to come back. Don't be fooled into purchasing this medication as treatment for Fin Rot, although you can purchase it to use after you've cured the rot and just want something to prevent growing fins from being re-infected. End of lecture!
I agree to what she has to say about melafix.
This is taken from the article.http

Important Medication Note
Many Petstores will try to sell you a product called Melafix or Bettafix for the treatment of Fin Rot. In my personal experience, neither of these products (which actually have the same active ingredient, Melaleuca or Tea Tree Oil) will help with the treatment of true Fin Rot. They may help regrow fins damaged by Fin Rot once the bacteria is killed off, but they are not the right type of medication to actually "cure" Fin Rot. Treating with either of these products may stop the advance of the rot, but once you stop treatment it is almost guaranteed to come back. Don't be fooled into purchasing this medication as treatment for Fin Rot, although you can purchase it to use after you've cured the rot and just want something to prevent growing fins from being re-infected. End of lecture!