Well, first I cant seem to get enough pressure from the pump... I had it up and runniong for 4 hours, teh pump would push water into the skimmer, but never enough to get the level or the foam to rise above the body. I tweaked it for hours and nothing... Also, the water intake on the tube from the pump to the body is pushing water out, not taking water in... I have it in the sump, with the pump submerged, but was wondering if anyone has ever ran it as a stand alone seperate from the sump. The pump (Oceanrunner 2500) says it can be run either way, but was hoping someone had a pic of how they have theirs set up... I bought mine used as well.