your right but i keep discus in that tank now and the water is always 88 degres so i dont know if there is any more ick in there or not havent seen it in years
Rest assured there is no ich in your tank. At such a high temp, no ich will thrive long enough to find another host and continue their survival. Ich will not tolerate very high temperatures.
Edit: I will add that if you try to buy a new fish, quarantine them before you introduce them to your main tank so any problems will be prevented.