Hey Pandas, What’s The Biggest Mistake You Have Ever Made?

Back when I was in second grade, I thought that if you put hand sanitizer on a tissue, you could clean out the algae in a fish tank. The next day, after coming home from a field trip at school, I was watching a movie. My mom got mad at something, and kept saying, "Oh, no, oh, no!" I went to see what was wrong, and my brother was crying. The water in the tank was foggy, and the fish appeared almost lifeless. I nearly killed the fish in the aquarium. My mom gave me spanking. I kept telling her I was sorry, and she wouldn't talk to me for the rest of the day. I got my toys taken away. A few days later, one of the fish died. A few weeks after, the other fish died. Since then we have not had any animals since. :(