Maroon Clowns and Copper

Ok so liveaquaria says that maroons can't tolerate over .15 (yes that's all it says) I'm assuming that's ppm or mg/l. But I've read many people have treated them with cupramine with mostly no ill effects and seachem recommends a .5 level to kill parasites.



To be clear here I don't have any clowns yet but am trying to plan ahead since I have a QT to use for treatment if needed.



Anyone have any personal experience with treating maroons?