this is a very good skimmer.
In my 10 years being in the hobby. I had used some Reef Octopus skimmers, Reef Dynamic skimmer, Coralife, BubbleKing skimmer and this SWC.
I have to say that the performances wise goes, this skimmer performances very well, equivalent to Reef Dynamic and/or BubbleKing.
Good luck with the sale.