125 gallon reef sump setup

[2bafish]

I am setting up a 125 72 inch reef tank. I need some help setting up a sump. The sump will be 48 inches long. Any help would be appreciated. Or any links to good info sites. Thanks guys.
I attached a pic of what I came up with so far. Only change so far would be that I want to reduce the 90 degree elbows and change them to 45 degrees. I guess it would help with the flow.



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