I've owned two previous bettas in my life. I kept those in the crappy conditions that most people do: in a small, unfiltered, unheated bowl. The second one lived a long, but probably sad, 3 years. This third time around I decided to go all out and get the necessities. A 3 gallon tank, filter, heater, thermometer, gravel, decoration, a second better filter with all new media that I don't quite understand yet. He's living the life compared to my past fish. I noticed he was losing some of his fins so I bought him bettafix, and put him in a bowl about a quart big for a week. Today I moved him back to his home tank and noticed his fins turning white! I don't understand how his condition got worse, especially considering I've kept him in better housing than my last ones who never got sick (to my knowledge). I'm beginning to take interest in aquariums but I can't move past this if I can't even keep a single betta healthy.