Hi, I purchased a discus from a forum member but have had trouble ever since.
The discus is a female ring leopard about 12cm - head to tail.

It has slowly been going off its food and seems shy & withdrawn.
It has one cloudy eye, no other physical injury.
It dropping is and has been what seems like a 'loose tan/fawn poo.
It has now stopped eating altogether and going dark.

I have it on it's own in a quarantine tank.

I first treated with Huey Hung H-4 & H-2 small improvement initially but then continued to deteriorate.
Temperature about 30-32 deg/c
I then treated for worms with Big-L first & then parzi, again a lot of loose tan/fawn discharge. Some improvement but again deteriorated.
I then treated with Metro (400mg/40 litre) & Doxycycline (50mg/40 litres)
If anything it is getting worst ?

Any suggestions would be helpful before I loose this fish.

Thanks,
Ray