Top of the line Reef Octopus Elite series skimmer. It is about 2 years old but been in storage over half of that. Recently replaced pump, impeller, adjustment pipe (and o-ring), airtube and screws to hold down body. I already have a Regal 150 SS and was going to swap out but been working so good decided to keep using it. If you are looking then should know these go for almost $900. OUSTSTANDING like new skimmer at a great price! Would rather not ship as pretty big but...