The pump just sits in the bottom of the reservoir under water, the water is then pumped through the pump, through the tubing or pipe(this is the manifold you build out of 1/2 rubber tubing or 1/2 pvc pipe, make it how you like as long as the sprayers are hitting the net pots) The sprayers(360) are just plugged into the pipe or tubing, the water is forced through the piping then out the sprayer, the water hits the pots and roots, then falls back down to the reservoir .