head loss from 90s

[jacksonpt]

Does anyone know about how much flow is reduced with a 90? I'm trying to figure out how to plumb my sump... one option is MUCH more convenient, but probably very flow inefficient.

 

[IronMan72]

several useful calculators are located on the main RC page. Look in the left column.

http://www.reefcentral.com/index.php?s=