dual durso plumbing question

I have one overflow box with two durso drains. How do I plumb this to my sump? Can one go to the filer sock, and the other to the refugium? Or should they join to one pipe, and T off to the fuge through a valve?

 

Two separate will be fine. Mine was set up that way. You may have to much flow in the fuge though. So it is possible to plumb them both into a bigger diameter drain pipe and tee off of that to the fuge with a valve to control the flow rates.

 

The PVC coming out of the bulkheads is 1 1/4 that I sleeved down to 1" cause the intake to the filer sock is 1" (trigger systems sump). The way I have it temporarily now is one durso going to the filter sock with a gate valve, and the other durso ran the same way to the fuge. Or should I just use 1 1/4 pvc all the way? I can take the 1" connector off the sump and just run the 1 1/4 line to dump in the sock.
The tank is an 85 gallon running to a 20 sump.

 

Here's how I have it dry fitted. Wondering if I'm over complicating things. The previous owner just had the right drain attached to a 90, then to a T off of the left drain and to the return of the sump. I don't see the benefit to having two drains doing it that way?
So, I have the right drain going to the fuge with a valve to adjust flow to the fuge, and the drain in case two 1" drains are to much flow. The left is self explanatory, it just goes to the filter sock.
Am I over complicating things? Should I just put a quick disconnect where the red handled valve is?