I have a 50-55g with a 10g sump and I have a Med->Heavy Bio load and am using the same skimmer as the original poster. I am using Bio-Pellets and Rowa and things are great... no looking back...
I am using a TLF Phosban 150 & have cut the central post about 2/3 the way down and secured it with plumbers tape. As well as the mesh to keep them in. I have a larger than normal pump but that way they dont clump. no regrets and the reactor was only a few bucks... whole thing was less than a hundred bucks...
Vid:
https://www.youtube.com/watch?v=Kh7LZExaMrA