I am going to be using the Aquaforest AF90 media reactor outside my sump using a separate pump. This is my first sump and I do not want to mess with plumping and create a manifold and valve to connect the media reactor to so hence I am going with a separate pump. What kind of flow rate should I be looking to pass through my media reactor. I am looking to use AF Bio Fil or AF Carbon. Any help would be appreciated.