Help with head/elbow

[Razorback reef]

I'm setting up a custom drilled 40 breeder with a 20 gallon sump. The pump I'll be using is a ecoplus 633 ~590gph.

The pump will sit at the bottom of the sump and pump up about four feet to a return nozzle with two 45° elbows through a 1/2 inch return line.

Max head for the pump is 7.5 feet so I'm guessing that I'll lose about half.

Anybody have any real calculations instead of guesses?

 

[JoshH]

Flow chart for your pump Shows around 280 GPH at 4 feet plus a couple elbows would probably drop it to around 250ish, hard to know for sure but at least a close ball park.

 

[ca1ore]

Might want to consider using 3/4" return line to preserve as much flow as possible.