[KodiakBear]

I've been working on the same concept with my sump for a while now. I'm in the Navy, and used the technical manual from a system on the boat I'm assigned to to get the ideal ratios to make it work.
When I first built my sump, I didn't want to have my canister filter go to waste, yet since it couldn't overcome the differential pressure between the rather shallow suction in the sump to the vertical height to the display tank, I used an eductor and a small pump to give it the suction pressure it needed. I used a 3/4 inch PVC 'T' connector and a small poly hose. The hose has an interior diameter to fit the discharge of the small 'booster' pump, and a 3/4" outer diameter to fit inside the PVC. I made a lateral cut at the end of the hose and rolled it into a funnel to act as a Venturi tube. I used silicone to seal the cut. When the silicone was good and dry I placed the hose into the T with it's outlet being as close to exactly in the centerline of the vertical connection of the T as I could get, and again used silicone to hold it in place. I then connected a tube at the bottom to take suction from my sump, and the outlet goes to my canister filter's suction line. With this I have been getting plenty of flow with no ill effects. The important parts of this design is to make the outlet of the venturi 1/2 the diameter of the pipe, and place it at the centerline of the vertical tube.
Hope this helps