The irrigation system is working fine! The construction assembly of the individual elements of the test run and the subsequent laying in the earth really was not difficult. TIP: The tube at least one day in advance as much as possible to roll and place in the garden in the sun. So it becomes a bit straight and the warmed material can be cut better. The Quick and click system is mega simple and the adjustment of the sprinkler T100 and T200 can be easily adjusted. Warning: Carefully turn the sprinklers on the thread. Do not overtighten! It happened to me once! My mistake ...... only metal was previously accustomed ... hehehe ...