okay, if i got the orientation of your sump correct.
this should work.
if section 1 is at the back of the tank
section 2 is front left side
section 3 is front right side
tank drains into 1
flows under baffle into 2 (refugium)
over baffle into 3 (return pump and skimmer)
you'd need another baffle in section 2 just behind the current baffle.
(colored in red)
this baffle would go from the bottom of tank, and would be shorter than baffle leading to section 3
this way, water flowes under baffle 1 (bubble trap)
flows up over new baffle (into refugium)
and then over 3rd baffle into return chamber!
make sense?!?
