Used Vertex IN-280 skimmer, works great except for the pump. Most people would recommend a pump upgrade anyway. Used 4 years in a heavily stocked Acropora filled 270 gallon tank until my pump died. Happy to throw in the broken pump on request, impeller or other parts useful if you don't buy a better pump, just please don't plug it in. Also want to mention it has been modified to replace a broken air hose fitting, but this doesn't affect how it works.