I bought a higginson and was not happy with it. I went to a local hardware store and bought a pump up ball, the kind used on outboard motor gas tanks. Got the size with a 5/15" inlet and outlet. Also bought a 10 length of latex tubing with a 1/4" ID. Just cut the hose to the length you want for inlet and outlet and you are in business, so to speak, The latex tube works just fine as a colon tube if you wish. Just add the tube clamp and you are in business. It has a much better flow and the ball pump realy works well. Try it yourself and happy pumping!