It just started today. I changed his water (1 gallon tank as of lately) today, i change it daily since he's been in his 1 gallon tank. He used to be in a 4 gallon but he got finrot so i took him out. We did about 2 months trying to get it better and it kept getting worse very slowly so I ended up cutting his tail to stop the rotting.. It's worked great, he's been growing his tail back slowly for the past 2 weeks. I just got done doing an AQS treatment yesterday so he went into fresh water with no salt and just Stress Coat today.
I noticed around 2pm that his eyes looked a bit big, but they have always been quite large so i didn't think much of it.. later on i checked on him and they were quite cloudy, one more then the other (his left). I figured I would wait a little while to see if it cleared up or if it got worse before I did anything. Just about 30 minutes ago I checked on him and his left eye is huge and he can't see out of it at all it seems like.
I just added some Maracyn and Maracyn 2 to his tank and will change his water again tomorrow and add more for the rest of the week.
I was wondering if there was anything else that I can give him that will make his eye better. I haven't had a fish with popeye like this before.. one of my other boys I had a while back had gotten it but it wasn't as sudden as this or as bad.
I attached some pictures so you can see, the first one is of him yesterday the 2nd is from this afternoon and the rest are from just now.