That is something I will have to look into...One of my fish looked as if it was about to turn upside down as it was moving around so I didn't even waste time bagging and floating it in a warmer tank.I simply netted,transferred it and slowly lowered it into the warmer water.Good catch man. I have had so many issues with forgetting to unplug or plug back in heaters, I finally set everything up on power strips. It is harder to forget when the lights and filters are also off.