I recently got a black moor goldfish and he is pretty small as in maybe an inch and a half. After getting him I noticed he was having white stringy poop that have been going on for a weekish. I began API general treatment on him to treat for parasites, both treatments have been administered and he seems to still be having it. The pH was 7.5 no ammonia, nitrates, nitrites. I have been fasting him during treatment and also added an Epson salt bath at one point as he was having swim bladder issues. I'm not sure if I should just treat him more or of there is some other type of thing that is going on. I have a basic 10 aqueon tank with filtration and everything bit removed the carbon filter during treatment. Is this a common issue with young fish he may grow out of or is there chance the treatment didn't work or it's something else. The treatment seems to have made him a bit more lively at min.
-Any advice is good, thank you
-Any advice is good, thank you