making close loop system

[mark]

If you're planning sand in the sump, thats a lot of water moving for it.

Why do you need to remove the sump? What's wrong with craming the biggest sump in the stand that will fit then slide the whole thing against the wall?

[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?