Here's the one I made and use. It's the vac tube with a hose attached and a brass tap fitting on the end. Works great. After you siphon and drain, you just hook the brass fitting up to the tap without removing the vac from the tank and turn the water on. I fold the hose and kink it to stop the water draining and making a mess while I hook it up to the tap. If your looking for a fitting like the python has, it is basically a water bed fill/drain fitting.