The pump was purchased directly from Amazon. This allowed me to save the shipping. 13 days delivery time were fully in line. The pump must be mounted only. I have the same at together build Teflon tape around the threads tightly wrapped => Everything. When together build not forget the two grommets on the hose connection between sand filter and pump to push. Then the black tube is immediately sealed. When you first turn on the valve to make rinsing. So no milky water enters the pool. If the pump is running normally, you can now see a real whirlpool in the pool. Finally, the dirt can be sucked out. I would buy the unit back ...