tI had my tank at 88 degrees for the past two weeks have done water changes at 50 percent twice a week. I haven't seen any spots till this morning my Oscar has one spot on his fin. I was kinda mad I thought I had it cured. what else should I do. should I keep up with the temp and do more water changes. should I had meds which I don't like to do. haven't had good luck with meds. any help would be great thanks guys

