Originally Posted by
brewmaster15
Hi Karthic,
Its possible this is the result of discus aggression towards each other. Do you see any tail nipping or chasing going on? The white area would be opportunistic fungus attacking damaged tissue.
The salt you added... 6 tablespoons per 32 gallon is good for stress but for this probably will have little effect. With a measuring spoon treat with 1 level tablespoon table salt per 2 gals water.Maintain that
concentration for 7 days and see how it goes. Maintain good water changes, daily would be best in this case of about 50% or more.
Keep an eye out for aggression as the main cause.
hth,
Al