This siphon is supposed to be super easy to use. The first time I tried it, I got it to work! For me, this is quite the feat. So in other words, if I can get it to work, then it really is easy to use.
The instructions say to place the valve in the liquid you need to siphon. Move it up and down until the water starts to rise in the tube. Place the other end of the tube below the valve and it should start draining.
This would make changing an aquarium so much easier. And you don't get the liquid you are trying to drain in your mouth. This I would definitely say is a positive for this item. I will be doing a video next so keep your eyes open for that one at My YouTube Channel later today. I will also try to remember to update this post and add the video as well.
You can get this siphon on Amazon at http://www.amztk.com/super-siphon-hose/.
Have a great day!