Worst horror fish stories

Calmwaters

I was working 2 jobs and had been sick for about 2 weeks and could not get better well my now ex sister in law thought she would help me one day and she cleaned my whole house includeing the fish tank. It was a 20 gallon with fish in it that I had had for a long time they all had names and personalities. We lived in the city and she did not know you had to put water conditioner in the water to remove the Chlorine so needless to say when I got home and went to feed my beautiful babies they were all belly up. I was in tears.