need of pump advice

[Reefermike]

i am currently rebuilding my stand and thinking once that was done i woulld like to have 1 pump to do it all. . I plan on a biopellet reactor, carx gfo and carbon as well as return. It is a 120 and a 40 breeder sump. i was thinkin a waveline dc6000 or 10000. i guess more helpful woukd be what gph would you advise to run this . I am only looking for approx gph of corse. Once that is determined i will need to get advice on the manifold

 

[oscarinw]

I am one that prefers to get the tank flow from powerheads and only put 7x the total system through the sump per hours. for a 120 gal I would suggest the DC12000 as you will be able to dial it down whereas a too small pump will need to be replaced at some point

 

[Reefing Madness]

I also dont like using sump pumps as flow in the tank. But that aside, flow through the sump should be anywhere from 3-6 times your dt volume.