Maybe I'm blind, or an idiot, or both, but...
Trying to figure out the flow path here, and I'm confused.
I'm assuming the drain goes into the filter socks, correct?
Is the skimmer going in the little compartment next to the socks, or in the big compartment in front of them?
If in front, then what sets the level for the skimmer, the slot on the divider, or under the socks?
Also, does that chamber dump into a refugium (in the middle), or is the return in the middle?
I would assume that's the refuge, but if so, that's an awfully low water level...
And, that would put the return on the other end (makes sense), but then the return level is even lower than that.
Are the pictures not showing baffles and skimmer stand or something?
Like I said, I'm confused, but I just can't get the flow path working in my head, but what I see doesn't look like it will work, or you're going to have about a 5" +/- operating level, and no way to control the drain/inlet volume or operating height.
What am I missing here?
Do you have a flow diagram?
Again... maybe I'm just blind, or an idiot, or both...