Hi all, The Vortex has a rubber "o-ring" around the intake/exit. Is it designed to be inserted directly into a filter (I have a Phresh that just arrived)? It appears the Vortex will fit but I didn't want to go too far before I asked. The o-ring did get displaced when I did a test fitting. Along these lines, can anyone recommend the best Home Depot solution to this if these two are not meant to be joined directly? thanks...