If u do take the advice of removing them , freshwater dip or soak or whatever , be prepared to kill the whole LR, be prepared to cycle your 10L tank for a longer period , be prepared with high ammonia,nitrite,nitrate,phosphate and all the other more problematic issues.
And after all that , when u start to buy corals take note that all corals that comes on LR will have these critters in them too.