I just got a new reef octupus sro1000lsss today. its fits great in my 10 gallom sump which next week will Be a 20 gallon sump. my question is about the water level. It says that the water level should be 6". But if u haven't seen it before the body of the skimmer sits on the pump whichis about 3" tall that's what makes it space saver. Now where should the water level be 6" from the bottom of the pump or 6" from the base of the skimmer body. I have read and heard both sides. So does anybody have experience with this skimmer?