Hey everyone my yellow watchmen goby was acting a little dejected and not eating for a couple days now hes very lethargic and breathing heavy ive had him about two years with no issues i ended up doing a fw dip and moving him to qt with copper not much visibly wrong except he had one tiny white speck between his eyes that was relatively new which actually seems to have gone away after the dip display tank is very stable nitrates and ammonia are good only thing i can think of is we had a pretty lengthy power outage that probably caused a decent temp swing but that was a couple weeks ago and he seemed fine afterwards any recommendations on additional treatments beyond the copper? Thanks a ton for any help he was one of my first fish when i got into the hobby so really dont wanna lose him