No heater's tank maintained temp @ 83. Maybe the oscar did puke. It's odd how the water was getting cloudier buy the minute. I seriously questioned that she sabotaged the tank we did get into a argument earlyer that day. And get this she called me today on my way to work and told me the dog(a three year old bull terrier) wasn't eating or drinking and not wanting to move. Now you guys are really gona think it's her for sure !! Maybe I'm the next to go? No she seam's really concerned and want's new fish. I'm taking the dog to the vet first thing in the mourning. I haven't yet but will test the water . That was over 6 years And hundreds of dollars in fish that just pooofed & Die Hope I find out Why. If the fish did puke would the ammona be that strong????
you could have a gas pipe somewhere that leaking fumes