long story short an old roommate(hence the word old) screwed up with Peco and our electricity got turned off for like 2 days. i was very worried for my fish, more so my two green spotted puffers. the thermometer on the side of the tank only reads down to like 70 and the very last one was the only one that was bright which told me it was probably actually like 60ish in the tank. surprisingly and luckily i didnt lose anyone and probably would have been very upset so i couldnt imagine losing a puffer that was of that nature! i feel for you definitely, sorry for you loss.