I picked up a used 20long acrylic from the lfs
for $30.00, got a new hole drilled and precut partition pieces from a local plastics shop, plus 6oz weld on 3 and an applicator for 24$ total. Four hours of tweeking with it all and I have a sump+refugium. Tomorrow is the water test. I put the refugium in the middle, left plenty of room for a skimmer upgrade, and a return pump upgrade.