Can any one give some instruction on stopping the flow of water once lines have been cut or in order to cut PVC lines. I know how to stop the skimmer flow, with the gizzmo. What do i do with the flow coming from the drain. How do you stop that suction that was created by the pump. I have shut of the skimmer line and left the drain open it doesn't make since to me, water is running up hill. Oh yea its and in ground pool. Thanks