I feed my tank about five kinds of food mixed up. The eating wasn't the problem. I talked to my wife about it and she opened the windows in the living room this morning when the temp was still under 60 f-----g degrees out. I just noticed my 6 line of 5 years is MIA. I had that fish since the beginning. What are you going to do though right? I would have probably killed them next weekend when I switch to my new 120. New to me anyways.