Sump
The return pump used for this build will be the Reeflo Yellowtail. I calculated the head pressure needed to be about 15-16ft. This pump seemed like the best option, although it definitely is a bit overkill. I will need to keep it dialed down quite a bit.
Of course, since I am using an external return, my sump will need to be drilled for the 2" input the Reeflo requires. I admit this definitely gave me some anxiety. I've drilled plenty of glass tanks before, but never a brand spankin' new acrylic sump that costs a pretty penny.
I opted to use a 75mm diamond drill bit, paired with my Dewalt hammer drill, set to regular drill mode.
I made a template and secured it with some pipe clamps.
Success!