If I'm going to run to Filter Floss in the IM Media Basket in my IM Fusion, do I just cut a square pad of filter floss to size and lay it down in the top compartment of the media basket? Or do I need a cup or some kind of container? The Fusion comes with the Media Basket and that comes with fiber balls and they seem to just sit in the top compartment. Also any recommendations for Filter Floss? I've seen lots of recommendations for Pinky Filters. Do I need to pre rinse the filter floss? I pre rinsed the filter socks before using them. Thanks!