Aqua-C Urchin in sump Protein Skimmer w/Rio pump: $110/obo (O-ring is cracked and barely holding on..can use new one)
Actual footprint measurements are 7.5"x3.25" (5.25" if you include the buttress mount) This comes with a RIO 1100 pump
**NOTE**Chipped on bottom left corner of overflow...it...