Sump to Fug Flow

[jojo22]

I would just use an overflow box.

[Grue]

Place your protien skimmer in the sump. If you read the directions it should tell you what it's prefered dept is. Let's say 6 to 8 inches. I would place the bulkhead 6 to 8 inches from the bottom. Or the middle of the waterline (7inches) With bulkheads on both sides (Sump and Fuge) connect the 2 with your choice of tubing\piping. Only change I would make is where water enter the fuge I would add 3 baffles. Water out of the protein skimmer will add microbubbles. This would also be a great place to add so liverock debris. I am not an egspert just my 2c
Grue