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If your tank has ich present then you will certainly always have ich. There are several species that can live in the presence of ich without issue. Acanthurus tangs are the anomaly. They would be more difficult to keep in an ich management setting than most fish as they don’t have as much of a tolerance as other fish due to their thin mucus layer. People do it though.If a new fish has ich, but is swimming, eating and acting normal..will it ever get over it if left alone with good water quality and food or is treatment always necessary?
They can tolerate it, but it could still have a presence in your system without symptoms on the fish.So a fish not a acanthurus tang could get over it without a being put in a QT tank with treatment? Or should a QT tank with copper be the solution?

Your situation is probably more common than not. Thanks for sharing and the tank looks great!I had ich in my display tank about a year ago. No way I could catch out all of the fish, so I road it out. Only lost one fish, a powder blue tang. Other five tangs, clowns, angel, wrasse, etc. survived. Now I don't see any signs of ich anymore, but it is always going to be present at some low level. Everything is thriving, but I won't be getting any acanthurus tangs.
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The fish is in my display tank but other than the obvious white spots doesn't do anything out of the norm of a healthy coral beauty. It swims around, picks on the rock and eats pellet and flake food alike. None of the other fish in the tank show any signs of ich at all. I was thinking of QTing it for a month with copper. I've never had this issue before so I'm curious as to how I should proceed.Well this really depends on your situation.
Have you been QT all your fish, corals, and inverts running parasite free method to current?
Is this fish actually in your display or is this a typical question?
The fish is in my display tank but other than the obvious white spots doesn't do anything out of the norm of a healthy coral beauty. It swims around, picks on the rock and eats pellet and flake food alike. None of the other fish in the tank show any signs of ich at all. I was thinking of QTing it for a month with copper. I've never had this issue before so I'm curious as to how I should proceed.
www.reef2reef.com
Could you share a closeup of the white spots on your coral beauty. Just want to verify it is indeed ich.The fish is in my display tank but other than the obvious white spots doesn't do anything out of the norm of a healthy coral beauty. It swims around, picks on the rock and eats pellet and flake food alike. None of the other fish in the tank show any signs of ich at all. I was thinking of QTing it for a month with copper. I've never had this issue before so I'm curious as to how I should proceed.
www.reef2reef.com
Bingo!Hard picture to tell but from what I can see it does NOT look like ich. It looks like Lymphocytis. Read this thread and confirm if this is what you're seeing. You have the best view to diagnose.
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Lymphocystis
Lymphocystis What You Need To Know: * This is a virus that many fish carry for life. The white nodules (cauliflower-like growths) can grow both externally and internally; so symptoms are not always visible. * There is no known cure for Lympho. However, feeding vitamin-enriched foods and...www.reef2reef.com
Bingo!
Lympho will heal with good water quality and nutrition. It's a virial condition and fish in transportation often show symptoms. Your other fish can get it/probably now have been exposed so keep the water clean and feed well and you should be fine. I don't think I have ever heard of a fish dying from Lympho?


