Ok so today I was at Walmart. And they had so many amazing fish. Even CTs (Btw I found Merlins twin but I didn't get him :/). Anyway they were all healthy and the cups were bigger and cleaner. One female had a bacterial infection on her stomach. So I told the person who works with the fish and he took her out of the cup and put her in a different cup and did a salt bath on her then he returned her to her original cup and added some watered down MelaFix.
I think I did it!! I made this Walmart a safe place for bettas!!