hey fatty k, i know your answer!
Well, here is where you went wrong. Melafix, is a very good medicine! But in your case, isnt the right one to use to fix fungus issues...
My advice would be for you to go to petsmart (or your local fish store) and buy a bottle called "pimafix" or a tablet box of "Fungus Clear" by Jungle labs. The Second one is about 3.24 at walmart!
Melafix is usually used only for ripped fins and fin rot! So, only use this if you only see nipped, bitten, or ripped fins!
Dont worry, i think everything will be allright.
Make sure you do a 25% water change the day after you put chemicals in your water though! Im assuming your lyretail fish is a molly? (or a livebearer) so i would advise to add some aquarium salt. (sold at local fish store)
Good luck!
If you have anymore questions, feel free to email me at:
[email protected]