. "I was impressed when I opened the box & saw the quality of this skimmer....It was very easy to set up & cleaning is a breeze since you can remove the double chamber & clean both with easy re-assemble....I would only reccomend you place this skimmer in the sump because when you remove the collection cup the unit tends to overflow....The collection cup is very large compared to the Tunze I used & it" . . .