I'm having the same problem with my green terror as well, though mine is approximately 6-7 inches. Everything about him appeared normal except about five days ago he became anorexic and just yesterday I noticed his feces is white.
He is currently in a quarantine tank and has had one treatment of Parasite Guard by Tetra as of yesterday and I plan to repeat the treatment again tomorrow.
I went to my LFS where I was told that this medication should help, if not there is the Epsum salt that I was told works really well (which you mentioned that you've tried). There is also Metro+ which I've read works well.
Good Luck!
He is currently in a quarantine tank and has had one treatment of Parasite Guard by Tetra as of yesterday and I plan to repeat the treatment again tomorrow.
I went to my LFS where I was told that this medication should help, if not there is the Epsum salt that I was told works really well (which you mentioned that you've tried). There is also Metro+ which I've read works well.
Good Luck!