Rid ich is really nothing but methylene blue (or malachite green, basically the same thing). Its a poison, and is also used in the microbiology field as dies and such. Generally, its not the best to use. Overdosing can cause huge problems. Not to mention, it will kill some, if not most or all of your inverts in your tank.
Barring you have fish that can withstand it, bump the temp up (like puriti said) to 86F or higher, and add salt if you wish. You'll be much safer and your fish healthier this way.
Good luck.