I just added a refugium and I already have a hang on skimmer (aquaC remora). So my question is I have a extra Coralife skimmer should I put that on the refugium or is that just overkill or can there never be too much?
Overkill, no, but not really worth it IMO. All of the pods and stuff that would grow in the fuge would probably get sucked up into the skimmer if you put it in the fuge anyway.