Pls Help

[Reverend]

without a quarantine tank or separate sick fish tank there really isn't much you can realistically do. also note, the ich will stay in your system for a couple months. you really gotta QT the fish before you put them into your system or get your LFS to QT them for you if you trust them. after they look ok in QT, then you can transfer them into your system, fatten them up, feed them garlic with their food, and that should toughen them up so they can resist the ich and other diseases that they will be more susceptible to if they are stressed and unhealthy. alot of medications are not so great for a reef tank and the ones that are supposedly reef safe aren't so effective against ich. that's of course, just my opinion. some people run UV sterilizers as a preventative measure against things like ich as well but how effective they are is still debatable.