Currently using a Iwaki MD70RLT. From the
RC head-loss calculator shows about about 15' total head-loss (horz/vert/fittings) but figure I'm ~1000gph. Had started with a March 6 series and figure probably was pushing 2000gph.
Thread that might also be of interest:
http://reefcentral.com/forums/showth...hreadid=769218