Best overflow plumbing for a reef ready 120

[smokinreefer]

Originally Posted by Titus99

Why not use drains as intended with gate valve one for quiet operation and other as emergency

Not sure what you mean?

So just put one drain and one return on each overflow?
Have one drain fully open as an emergency? And have a gate valve on the other return drain?

Would both drains from each overflow connect into a single drain going to sump?

Thanks.