I introduced a new starfish and two days later all of my fish are covered in a white powder. Some of them have clouded eyes. I'm not sure if it is causation or correlation. It doesn't look quite like Ich. I'm not sure what it is but I am very worried. My nitrates shot up and I think that may have had a hand in the outbreak. My PH is a tad low as well, but not drastically. Everything else is normal. Salinity is at 1.022 and the temperature is at 84 (I don't usually keep it quite that high but I bumped it to help kill off the infection if it is ich). I noticed the outbreak and high nitrates last night and did a 15g water change, then today I did another change. Everyone looked better after the initial change and everyone ate today as well. My tank is 55 gallons and homes two "Freshwater" Moray Eels, two Mono Argentines, three figure 8 puffers (which were supposed to be re homed today since they don't like such high salinity), a chocolate chip sea star, and a hermit crab. I have a quarantine tank ready for my inverts if I need to dose the tank with copper but it is not big enough to hold my eels. I am setting their quarantine tank up tonight. This is my first saltwater tank. I'm most worried about my Mud moray's flotsam and jetsam. I got them when they were teeny and took them through their life cycle from freshwater to brackish to full marine. I will do whatever it takes to make sure they are healthy. They don't appear to have any infection yet and I am moving them into a quarantine tank asap. Could someone please help me ID this outbreak? View attachment 1855