tail rot

well thanks everybody ,, fish looks fine ,, the tail i hope would get back in shape in a week for so ,,
doing water changes every other day , and adding 4 tsp per 10 gallons ,
thanks everybody
ahsan

Good too hear things are working out, keep up the salt and try too not use the mach green unless necessary.

Great too hear things worked out well..

WELL , THINGS WERE WORKING NICE ,, tail rot stopped making any more damages ,, after that i shifted to a bare tank ,, and now i have noticed that the tail is gettin more bad , and now also i noticed the lower part of fin bein affected.
Temperature maintained at 30c , water changes up to 50% every fourth day , adding salt to the tank , around 5spoons per 10 gallon , sometimes even more.
fish is eating nice and moving around soo far. today i used a 37% formaldehyde solution , just less than one mL to 32 gallons.
no signs of any infection in any of the other fish. Also i would like to know that how much time does discus take to grow back her tail when she's fully recovered.