I actually called Euro Reef this afternoon and they suggested the same thing. I got rid of a Coralife 125 and replaced it with the RS 100. I had to do the same thing with that skimmer. It appears that Euro Reef is just as temperamental
I am also using a RS 100. My question is do you have the output of the skimmer above the water line in the sump? The instructions say to do so, however, if this is the case I would only be using about half of the capacity of my sump.