I wouldnt put the skimmer in the refugium section if you have macro and rock in it already. It will suck up the pods
and other stuff thats in that section.
I have the same dilemma, I want a bigger skimmer but it wont fit in my skimmer section and I didnt really wanna ditch the refugium so I ended up staying with the eshopps. The eshopps I have is only 12 by 6 inches so that might fit, yes? And thats the psk 150, if you went down a size then it would be even smaller.