Greetings: In the old days(80's) I use to start my siphoning with tygon tubing and plastic clamps. It is much softer than the PVC tubing I currently have. The tygon was easier to clamp and start a siphon. The PVC is too stiff to clamp with those plastic tube clamps. I can do it but it's much harder. I know about the auto siphon top but they do not fit some of my BIG mouth carboys I use for secondary fermentation. Any homebrew stores sell tygon. What other siphon methods are used. Thanks Charlie