Ok, I have put the sump back in service. To my delight, it is working as expected. No bubbles in the refugium.
I have also added my old Vertex in-100 skimmer. Unfortunately, this skimmer is much louder than I remember. Lots of vibration and noise from the air suction. I am considering trying to quiet it down or I may just use a different skimmer. Will run it at night and weekends when I'm not in the office for now.
I also decided to drill and tap a hole for 1-1/4" plug in the first drain chamber. I didn't make the top removable over this chamber and had no way to fish anything out of the chamber that may end up stuck inside. So, now I will be able to unscrew the plug to access the chamber.
I have also added my old Vertex in-100 skimmer. Unfortunately, this skimmer is much louder than I remember. Lots of vibration and noise from the air suction. I am considering trying to quiet it down or I may just use a different skimmer. Will run it at night and weekends when I'm not in the office for now.
I also decided to drill and tap a hole for 1-1/4" plug in the first drain chamber. I didn't make the top removable over this chamber and had no way to fish anything out of the chamber that may end up stuck inside. So, now I will be able to unscrew the plug to access the chamber.