i would get it in a qt tank, I would first think worms.piperazine from rocky mountain discus,flubendazole fom UK akawormer plus. i believe the epsom salt is 1-2 tbls per 10 I don't use it so look up dose. start here first. could be tapeworm, flagellates bacterial also, if worms, a few can be seen with a scope if you have one.