[chi]

Tangs are notorious for ich outbreaks. Qt the tangs. And when you reintroduce it back to maindisplay. Use utmost caution and the best acclimation procedures (minimal stress, low light, drip acclimate . Etc etc). Borrow a uv sterilizer or purchase one or increase water change frequency. They help in addition to regular water changes. Hopefully it can fight off the ich.
The ich lifecycle is really a hit or a miss. Some people have 99.9% success rate for 8 weeks of fallow tank. But some with only ten days of fallow. Then there are the poor bastards who waits for that 99.9% 8 week fallow period and still get hit with ich. Then there are people who gives them garlic and vitamins and they appear to gain "immunity". Ich is always going to be there wih the garlic and vit method. Its as us living along with the common cold. No biggie
But in my experience. Garlic. Fallow for two weeks and uv with 10% water change twice a week rid of it entirely.

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