You did the right thing by going for cattappa leaves. Terrific advice. I fully vouch for its effectiveness. My female dwarf gourami had a similar problem when I got her, I did not want to treat her with meds without knowing what's wrong with her. Added 3 leaves in to my 20 gal and raised the temperature to a bit warmer 82F. Fed her green peas/brocolli laced with garlic powder or dried shimp powder for a few days. She was up and swimming around after a few days.
Ph variation even if very small can be harmful to fish. I've researched this a lot and fully convinced that fish always prefer consistent ph with its tolerant range. I highly recommend Seachem Ph Alert as a long term solution - you can stick it inside the aquarium, it will tell you when ph rises or falls so you can take action.
I do not mean to keep suggesting you expensive products - another product I've had great success with when we don't know what's amiss is Stress Guard. Its basically a very effective slime coat that works by simply protecting its exposed/inflamed tissue and preventing further infections. It is a very well reviewed product that's safe to use until fish does well and well buffered from accidently overdosing. I've found it effective in my second tank when my guppies were struggling to adjust.
We've all been there, its hard for a pet parent to watch their finned friends go through such phase. But fortunately there is a lot we can do - and I hope your betta too comes out of this soonest!
Ph variation even if very small can be harmful to fish. I've researched this a lot and fully convinced that fish always prefer consistent ph with its tolerant range. I highly recommend Seachem Ph Alert as a long term solution - you can stick it inside the aquarium, it will tell you when ph rises or falls so you can take action.
I do not mean to keep suggesting you expensive products - another product I've had great success with when we don't know what's amiss is Stress Guard. Its basically a very effective slime coat that works by simply protecting its exposed/inflamed tissue and preventing further infections. It is a very well reviewed product that's safe to use until fish does well and well buffered from accidently overdosing. I've found it effective in my second tank when my guppies were struggling to adjust.
We've all been there, its hard for a pet parent to watch their finned friends go through such phase. But fortunately there is a lot we can do - and I hope your betta too comes out of this soonest!