The fish hides under the filter all the time...she didn't do that before and she has something wrong with her scales. She is eating though.
I took out the log and washed it cause we are going to get a new aquarium tomorrow, this one is leaking, but that's another story. After washing the log really well it still smelled. And I can still smell it in the water inside the aquarium although it seems less since I removed the log.
There was a white smelly residue on the lid, the filter and the heater but my daughter said it was the tap water causing that..so not sure since the fish has been gone for 3 months. The smell makes you want to vomit , it is that bad.