I myself like a slow flow threw my sump/fuge the theory is slower flow gives the skimmer more time to remove stuff from the water as well as the macro algae I have a 180 gl. and the flow in the sump is around 2-3x volume Flow in side the tank is 30x volume.
A refugium is a good place for pods
to grow and most grow some kind of macro algae in there as well.
Most people create their own problems by not following the basics and refusing to stock appropriate to their system. Gregcoyote 2013
SPS = Stability Promotes Success