chickentrains
love is love
I use this stuff : https://www.petsmart.com/fish/food-...i-betta-aquarium-water-conditioner-17527.htmlIt's possible that she was malnourished and just too far gone at the time of purchase. Usually Petco and Petsmart feed their bettas two-three times a week and do water changes on their cups once or twice a week.
What water conditioner did you use? And do you know if your tap water has chloramine in it?
I don't know about the tap water