I am not saying you can't have success with them, but you know what came along with the price of having one and it looks like all 3 of you got it. So see, add 3 more people to that factor of having a great chance of ich. Whether it is managed or not. Ya got it.
Actually, No. I think you are saying that a tang has a greater chance of getting ich than most fish, and I agree with that 100%.
But immune fish, such as mine will not get ich. Even tangs. None of my fish have had ich in over 35 years so to me anyway, that means they are immune. I never quarantine and some of my fish are 26 years old. I add fish with ich all the time, just to boost their immunity. But immune fish don't get sick, never. If they did, they would not be immune.
Immune fish only die of old age or jumping out. If they don't jump out, and nothing kills them and they die early, we failed.
People don't understand this concept at all. If your fish are immune it is not managing ich, it is using ich to our advantage to keep the fishes immunity that it was born with working. Quarantined fish have no immunity which is the reason for all the quarantined fish on the disease forum and all the medications used. I don't have any medications, hospital tank or quarantine tank and never had.
I don't want to kill parasites, I want to have them living with my fish side by side as they do in the sea and I want my fish eating prey that have parasites in them just as they do in the sea with every meal. I also want them in contact with every bacterial disease there is just like in the sea. I have spent about 300 hours underwater all over the world and have yet to see a sick fish in the sea. But in quarantined tanks, you can see that every day. Just go on the disease forum it is loaded with them. It's like hair algae. We can't defeat it because it is a natural part of every reef but we can train it to grow where we want it so we can get the benefits of it without the nasty ugly part of it.
Quarantined fish, including tangs are always on the verge of contracting something and if they do, they normally die because of their lack of immunity. I don't have that problem because after so many years, I have learned how to do that, and it is easier than quarantining. But I have been saying that for years and still many people don't get it and would rather try to cure their fish after they get sick.
Have a great day whatever you do.