I am trying to set up a sump for my 75g and I'm trying to determine what the baffle heights should be. I have a Reef Octopus NWB-110 skimmer. The manual says "Water level in sump should be 6”-10” as long as it is not covering the water outlet pipe." It measures 7.5 inches to the bootom of the outlet pipe which is 1.5 inch diameter. Why would they say 6-10 inch if the outlet isn't that high? Is anybody using this skimmer that can offer some advice?