One of my fish died and I'm really bummed. I had a girl that was on a working interview that didn't dilute the calcium magnesium in water and it killed Dori. If somebody has a nice fish that they are wanting to get rid of, it would make my day! I also had a few coral die when I put in a sea cucumber and it was not doing well from the start. It ended up killing off a few of my coral. Definitely a bummer right before Christmas time.