Need Sumer help with rerun pump

[tazzy123123]

Hi all need dime help on what size return pump I need. My tank is 48x18x18 and we have a 48x15x15 sump, pipe working to sump is two 40mm pips and one 32mm pipe back to the tank. ,if anyone can say how many gph this setup can do that would help a lot to, thank you

 

[KrazyKuch]

so thats about 65gal so you would want around 700gph.

but that plumbing could prob handle around 2000gph depending on type of overflow used

 

[tazzy123123]

Thank you and the tank is drilled and all lives in a wire box