The green of the enclosed suction pipe leak and the Eheim 2173 wanted to have not fallen before the filter is ever arrived here. In addition, the installation set consists of several individual parts and is so much more variable and can be better adapted to the respective events. The gray falls hardly on, all in reinforced and usual Eheim Quality. The set is currently 6 weeks in use. Installation was simple and straightforward. In addition, there are other items that can be used to expand the set, if necessary, or adjust more specifically. For me, the strong buy recommendation, so full 5 stars !!