I'm setting up a separate refugium and wanted to know if using the return water is better or using overflow water is better. I have the option to do either. I have a filter sock which both overflows currently feed into which removes the larger solid pieces of waste and was thinking to either t-off the return water (after sock and protein skimmer)or take one of the two overflows (before the sock) to feed the refug. Does it really make a difference?