None of the moderators have been posting so far tonight so I'll give this a stab to try and help.
Are you sure you are treating ich? I read your other thread about your rock beauty which was also not getting better. Hyposalinity should be effective if it is ich - two fish not improving suggests that you may not even have ich. The hyposalinity should actually put the fish under less stress.
Are the spots salt grain size? Do they appear solid or fluffy? Were there any other signs of illness (not eating, rubbing on rocks, etc)? What species of fish do you think brought in the disease? I'm not sure what other medication I would consider as I am still uncertain about the diagnosis. You need to watch the pH closely during hypo. Your other readings should also be watched closedly as you removed a lot of your biologic filtration when you removed your live rock. Any chance of getting a pic?
If you'd like, you could add some garlic now. That isn't going to hurt anything and will sometimes help.
You probably have already tried praying - sometimes that works better than my other suggestions!