The tank has been running for about 3months now and only 1month with fish. I had the tang for 3weeks. What I thought happend was that she got into one of the rocks that had a hole in it. A large snail stayed there for a couple of days and after leaving this spot there was slime left over. The blue tang slept in that rock and got it all over her. By the time I saw what it was I cleaned it out but she was covered. I had a 6 lined wrasse get the same slime on her fin but was able to get it off within a day.
I am not sure it is ich. Actually, I still am not 100% that it was even a parasite. People have just told me that it was probably ich. That is why I am posting to ask your opinion since I am still new to saltwater aquariums. I have read lots of books and webpages but I find them to be vague in times like this.
My water quality is great. NH4 NO3
are all 0. I do regular water changes and I have a protein skimmer running on my refugium. Ph is a little low (8+) I add a Ph boost but it seems to equal out around 8.1 . The tank is 30gal with only 3 fish in it now. I have blue legged hermit crabs, snails, 1peppermint cleaner and a skunk cleaner, and one bulb anemone.
I do not plan on adding another fish for a little while anyways. How would I know if the other fish got ich. I have seen photos but everytime the fish are covered in quite obviously white spots. Can they be more subtle and how can I identify them?