i been treating my tank for red bugs and decided to also treat for flatworms. i used salifert's flatworm exit and treated the whole tank but my corals are all stressed, i siphoned out as many as i can, performed a 20% water change and threw in fresh carbon. does anyone have any experience with treating there tank with salfert fe? my water is still a bit hazy, skimmer pulling out red crap and i'm preparing for another water change. any other suggestions?