Anyone run a Calfo-style overflows?

[ozman3803]

I have a approx. 250 gal tank I just picked up and wonder what type of overflow to run. Just was wondering if anyone has any ideas and/or pics of their tank skimming. What I am picking up is that a 1" bulk head is going to be 400-600 gph, is this right? I plan on running this tank with mostly SPS in the near future so the more flow the better right. I am thinking 3 1" bulkheads just not sure what type of overflow set up. So that should give me 1200-1800gph right? Should this be sufficient enough, also what type of return pump would be good for this. I really want to run the calfo but just want to get some opinions. Thanks