pump size to supply skimmer

[Gecutty]

Can anyone suggest a mag drive size to supply a Berlin Venturi skimmer "classic". Opinions also needed on the size of pipe from the sump to the actual skimmer.? The skimmer is going to be fed behind the sump and do I need to be aware of the 90 degree angles to get the water there?

 

[Southern Boy]

I am looking into picking up the same kind.I have been reading that the pressure should be around 77 gph.A friend of mine told me that they only need 350- 400 though.So I would like to here the feedback on this also!