How long after ich is cured should I keep it in the hospital tank?

I recently got another peacock bass at a really good deal. My LFS got him on a trade and he had some ich on him, I had the option for the LFS to hold it for me and they would treat him or I could just get him at a price I couldnt say no to. So I had my hospital tank all setup and treated him with nice 87.5o temps, some salt, and a little bit of coppersafe. As of this morning he is ich free, eating like a champ and showing no signs of stress. Im just wondering how much longer I should keep him in hospital for before I can put him in my main display?