Sump flow, GPM?

[Scavenger]

My 2 cents is, low flow through the sump allows the skimmer to grab more crap before it returns to tank. Just my opinion though.

[mark]

Nothing wrong with your sump return pump contributing to the overall turn over in your display.

Not that skimmers are 100% efficient but if stuff is missed the first time through, it's a loop so there's always next time.

[Pazil]

I have approx 2600 gph going through mine