I have for some time noticed a couple of discus breathing realy rappid i would do a waterchange and they be ok then they would breath real fast

I treated the whole tank with Discus wormer plus( this kills gill flukes and internal parisites) then one blue discus went into hiding and off colour so i isolated him and gave him a very strong salt bath !
when i say strong i mean strong! got the dosage from a discus website and its at 3 table spoons to a gallon water!
times are steped as fish the needs to build up to the 30 minutes Watched very closley for breathing !!!!!
airstone running to boost oxygen
evening 1 for 7 minutes
evening 2 for 15 minutes
evening 3 for 30 minutes breathing back nice and slow and looking 100% healthy
tonight i did a 4th treatment 30 minutes .and he didnt want to come out !!
tonight i also treated all of my discus to a salt bath of 10 minutes as they were showing signs off rappid gill movment/gasping and breathing super fast.
Impressed with the results on the blue fish i wonderd what i could treat the other fish with to get rid as i think i have a parisite boom in my mixed comunity tank?