Extremely simple to assemble and install. The thread is long enough to place the solar panel in height to enjoy the best brightness (a shadow on the panel and the trickle of water is reduced or stopped!). Works with a hazy sun, sailing and even dense but not heavy either! Really pleased with the purchase on which we had some doubts. Our pond is admittedly small (1.5 m3) but the small jet airs well water and produces a very nice music for us and for the fish! See it on the length ...