why start the salt treatment, if you don't even know what's wrong with the fish? it could be something as simple as, the fish has to poop. i NEVER did salt treatments with Cup when he was bloated, and all the way up to this last bloat, witch was a heck of a lot worse than his usual bloat, it worked JUST FINE with fasting him and seeing if he took a poo. i don't belive in medicating fish for ANYTHING, not even fin rot, if i don't have to, and rarely even use aquarium salt anymore, because often, clean water or fasting them works JUST FINE.
telling people to start salt treatments right away sometimes makes things worse. start by eliminating what's NOT wrong, before jumping to the salt. anymore, it seems like Epsom Salt is being used as a 'cure-all' for EVERYTHING on this site, and it's NOT.
the OP should start by FASTING their fish first, to see if just taking a poo will help. if after a few days, he poops and it DOESN'T help the fish, THEN start on the salt.