No need for the salts once you have given them once , just carry on with plain PH`D water .
Those dammaged leafs wont recover so keep an eye on new growth , That rep star is just in bottom left corner lol
i flushed with epsom salt a few days ago as you said and have been just using ph'd water, seem they are getting worse. the lower fan leaves are turning completely yellow now and are falling off and slowly moving up the whole plant. is there anything esle i can do?