It does look like ich.
Personally what I would do in your situation is daily water changes(50%)....get that temp up by 1 degree per hour until you get it up to 86 F degrees. Then keep that temp up there for a couple of weeks.
In the mean time do not add any new fish as they will become infected. I would also stop all medicines you are using. Salt can also be used at the rate of 1 teaspoon per gallon (dissolved in water before added to tank) but don't use this dosage more than three times. Then let the salt level slowly be diluted with the daily water changes.
Daily water changes and high temps are your best solution against ich. The clean water helps the fish be less stressed and it can fight off the parasite easier.
Good luck!
