Without a filter, time is what is really needed to clear cider, although dropping the temperature can really help speed up the process, as can fining agents like bentonite.
Simply racking and adding campden will not stop fermentation. As pekabrewey mentioned, you're better off fermenting to completion, then backsweetening, and finally bottling or kegging depending on your equipment.
In all the states no door stands wider,
To ask you in to drink hard cider