I haven't had any problems with the way I have it set up. I think it's more of a personal preference but I like having my refugium in line before my filter so I don't have to worry about macro algae making its way into the dt and then I'm skimming water that's already had the large particles removedOh! I didn't get that! My question is, all the micro organisms from the refugium don't get sucked from the skimmer? Because I have seen on the internet that there is a debate about the position of the refugium on the sump!
Many hobbyists have the refugium not on the main flow from the DT but on one side of the sump that takes water from another hose and overflows on the middle department!

