My water temp went from 80 degrees to 74 degrees last night due to a faulty heater. I had another one for back up in the tank but it didn't come on. I am now raising it. I am worried about the Fish getting ICK. I have 1 Yellow Tang, 2 Clowns, and 1 Lawnmower Blenny. Is there anything I can do to prevent this and if they do gt it what is the best thing to treat it? I have soft corals in the tank, plus Inverts.
TIA
TIA