This section is to show how to set up my waterfalls. You will see a silicon tube connected to a clear tube. On the silicon tube will be a silver dial, this needs to stay there. The silver dial adjusts the water flow and noise. Turn silver dial right to slow water down and turn to the left to speed up water. My waterfalls need a very small pump (Uniclife UL80) this is the exact name and size of the pump I use, bought from Amazon.