Did my Eheim installation set 1 as a replacement for the suction pipe, the risen at my EHEIM 350T was doing. After you have made a brief overview of the installation is very easy by hand. By individual "segments" is to use the set for various Aquariun (heights). Additional comfort brings the hose coupling. Both during initial assembly as well as for regular cleaning. Manifold with 1 to 3 segments! Use additionally the Eheim prefilter. Price is slightly higher, but the quality and function are worth it!