Ich in a reef.

[mark]

Think about the future, maybe more fish, transferring what you have to a bigger tank, should really try to get ich out of the tank.

A QT tank doesn't need LR (actually better if none) just some PVC fittings and the tank could even be a bucket. Even if you don't plan a full quarantine having a small tank around is also handy just to place new stock to have a really good look before placing in display.

And for next time, consider where you get your stock. Been to a couple of LFS in town where you can see infected fish another one that has a separate QT section for new stock. Also remember fellow reefers tanks aren't necessarily pest free either.

Though I preach QT I don't always practice and have been burned.