Sick Discus

[honamdhhpvn]

Hi Guys,

I have a few discus but they seem to be unhealthy for the last few days. I just got them for a week now. The old ones is healthy and ok, the new one is about 10 - 15 cm.... They seem to be jelly with white mark(pretty sure it not white spot) and I have been doing 50% water change for the last 2 days. ph is around 6.8 and add alot of salt, temp is 29. they breath slow and swim not normal. Can someone please help.

Regards

[Merrilyn]

How much salt, and what type of salt have you been adding?

Can you post a picture of the white marks on the fish?

Are they eating, and do their droppings look black or are they white?

[honamdhhpvn]

I have add 1 small teaspoon of sea salt crystal. the new ones doesn't seem to be eating. The white mark I'm talking about is not the white spot but rather some part of the skin became white and other normal, the end tail got rotten (like been beaten, but I'm sure it not beaten). sorry guys, the fish look like this. please help