Urgent Help Needed

[Hidan]

One of my Discus isn't eating since 2 days. And I noticed he has white poop.
The rest of my Discus are fine, eating like normal and behaving normal. This guy just hides behind the wood and if I try to peek at him he gets even more nervous and squeezes closer to the wood.
No new fish have been added to the tank and I have had the discus for around 3 months now and never had any issues.
I am hoping this guy just has indigestion or something but I thought I would ask the experts on your advise.

[Tuterosso]

read about metronidazole

[Hidan]

Is it worms or is it something else.

I basically want some of you experienced guys to comfirm if this needs to be treated with Metro or it could just be a undigestion or something else.

[brewmaster15]

Its either something like an internal parasite infection, possibly Hexamita or it could be a bacterial infection or both. I would move to a hospital tank and observe. If it continues, Metronidazole at 500 mgs/10 gals 1x a day for 10 days is what I would try.

Hth,
al