I did a substrate change 3 days ago and the day after when the dust settled I noticed what looked like ich on it. It’s a fairly new setup with a clown, a banner cardinal, and a yellow tail blue damsel. None of the other fish have any signs and the tang is eating, grazing, and swimming just fine and the spots really haven’t multiplied. I’ve researched and it could be a few other things besides ich and thought I would see what you guys thought and possibly treatment options. Thank you
