Somtimes I am too Helpful

So I decided to help my son clean his fish tank. All was well until I started refilling it. All of the sudden Alex said "dad the fish are starting to swim upside down" I looked at the thermometer and realized the water was too hot. We started draining the tank quickly and cooling the water down. When it was all said and done we lost 2 fish but saved the rest. I had to tell Kyle what I had done when he got home. I'm not sure I will help with the tank again. I almost cleaned it too well.