Horrible fin rot getting worse, nothing is working
Long story short, my betta has fin rot that I've tried to treat many ways that aren't Working (Salt, water changes, tetra fungus guard). Water is perfect, tank cycled, heated and filtered. I am currently treating with seachem polyguard. It has been 3 days, and I haven't seen any improvement. The package Says to treat for max 14 days and to add a dose every 3 days. The fin rot is getting worse and closer to his body. A part of his fin has become completely shredded in very thin pieces that attach to his body. The tips of many sections of his fins are bloody and bright red. I'm pretty sure he has red streaks on some part of his fins (pretty sure it's not hemorragic septicemia, since he doesn't have red streaks on his body). Some part of his fins are becoming translucent and then split. I need to act fast before it's too late. I need Quick advice, what should I do?