Hey misled, I posted a new thread titled everything is dead. All the details are there. Wasn't heat, my parameters have all been pretty consistent since May when I bought the tank established from someone else. I use 2 temp devices, an old school like stick on gauge and a newer digital probe and they've stayed pretty close to the same. 77-79 degrees. I've been home, my LFS kept trying to get me to buy more livestock because my parameters were supposedly near perfect. But I was taking things slowly.