DC Run pump calculation for 450 liters

[Bartolomeo84]

Hello,
I know probably that this was asked many times but I want to be sure as I planned to buy DC return pump 10000l/h which gives 40 x volume and I have researched and optimal according BRS is 2-5 so for my 450 litres it seems that it gives 5x450= 2250 litres per hour so with a backup 5000-6000 per hours is ok?

 

[tedfisher496]

are you asking gph through the sump or gph in the display?

 

[Bartolomeo84]

gph trough the whole system so sump not wavemakers etc only return pump