MY 70 gallon got ich from some feeder fish that i borought home it just popped up. I used rid ich on the feeder fish that are now in a ten gallon but dont want to use it on the severum and oscars and convict so can you give me any tips on getting this in line im currently setting my heater to go up to 84 for a couple weeks the spots are allover the tails but its not that bad yet