Sump size

[discocarp]

If I'm pumping 1000gph into an 84x24 footprint with a pair of 1" overflows, how much additional volume beyond the normal water levels do I need in my sump for power outages?

 

[mflamb]

There is a sump volume calculator on the RC home page.

 

[bag151]

You need 17.5g to handle the overflow volume, min recommended size is 27.5 g.

 

[discocarp]

Thanks!