I bought a baby betta less than a week ago, and she has ammonia burns. They were already there when I got her, but I feel like it got worse after I gave her melafix (I didn't realize it hurt bettas). Is there anything specific I need to do? Other than her looks, everything else is fine. She has a good appetite, and a full belly. She's super active, and her color doesn't look dull. She's not showing any symptoms that I've read about. Thanks for the advice!