I thought I would get a fish tank as a new hobby so I bought a 10 gallon tank and everything the fish store told me I needed. Bought stuff before I did my research, my fault but now I know more. I know about cycling and testing water. I cycled my tank and do regular maintenance of water changes and testing and everything is fine. My parameters are great and my current platys seem happy. So why is my betta dying? Every time i think i have a hang on everything and my fish are doing great something goes wrong and a fish is sick. So what am i doing wrong? I'm about ready to sell the whole thing and give up. I love my fish and want to well with this but I keep getting discouraged. Not to mention my family keeps calling me a fish killer. What do I do next?