making close loop system

[banditpowdercoat]

Cause it's a corner unit tank and stand. The largest that will fit is 12x21 Unless I build a triangle one LOL.

What flow should I be aiming for in my sump? Looked ay the overflow again, not enough room for a pump in there, so it's the sump return only. I guess I could have the tank drain split into 2, one near the pump, and the other for the flow across the sand?