A few seconds after shoving in a sponge filter:
30 seconds later:
Filter would look way better if I stuck it in the left corner behind the lava rock structure. Butů decided it would be better if it was in an easier to access area of the tank. And I'm sure it will become a big time feeding ground for the shrimp.
Flow was cranked up in the photo but I've since turned it down. There's no serious current in the tank and the bubbles hit right at the surface so there's a bit of gas exchange. Aimed for minimal disturbance and think I finally found the right setting.
Can't wait to add shrimp!