I woke up this morning at 7:30am to the sound of water splashing from my fish tank. I found my discus was freaking out; swimming from one end of the tank to the other, bumping itself against the glass. It likes to stay at the top of the water leaning to one side. I did a 30% water change and added two tablespoons of salt. But my discus is still freaking out. What's could be the problem that causes my discus to be freak out like this?
Make sure there is enough oxygen going into the tank becuase that can sometimes cause things like that and maybe turn the lights off and try carm him down if possible.
check your Ph, too, if your tank has had a Ph crash your fish may do what its doing, too. acidosis can often induce erratic darting and intense breathing, as the gills are slowly being destroyed. like pbates suggests, look at your other fish to verify this as a Ph crash will affect all of them. CO2 may cause instabilities in the PH.
The discus is starting to calm down a little bit. Two days before the discus began to freak out. I change the time of my light on when to turn on and off. I used to have it turn on at 6pm and off by 2am. I changed it to turn on at 12 pm and off at 10pm. Do you think this change somehow could effect the discus?