Turning 60, almost 20 years ago, i began to need an enema. Turned my butt up to the spout filling the bathtub and got some. The gymnastics required that the tub be near empty, to avoid drowning myself. Went to Walmart after that first year of desperate upside down contortions. Washed it out with soap and boiling water, thinking there was likely manufacturing residues in it, and then got my tummy filled with scented soap enema. Aahh, now that needed a quick repeat! But in the repeat, i played with it and recycled the fluid back and forth a few times, for good measure, :0)
Cleaning up, with a quart still weighing inside me, I washed it out just like when it was new, more boiling water and soap. Rinsed it with Hot water and sniffed it to be sure my waste was not lingering inside. Hhuuhhh? Manufacturing residues were giving off a heavy stink, but no hint of my own in the red bag. So tossed it.
For the next year it became a hobby to develop some safer portable enema games. The game is necessary to keep up the interest and not forget taking care of the problem. ( enemas have cured my angry hemorrhoids )
Siphoning from a plastic gallon jug allows frequent total replacement of the reservoir, and there is no apparent aromatic residues to worry me. To follow is the final arrangement, quick and easy.
The science in learning syphon techniques and not wanting to alter the jug.
Just use it a while and throw it away. Learning how to keep the hose feed on the very bottom of the jug. After much frustration, i took a heavy stainless serving fork and worked the feed end in between those tines. But i had to cut some of the top off to get the big fork in and out of it. Then i remodeled the lid to hold the tube down on the bottom. Put a brass fitting on that end, so as to keep it from trying to float up any at all. But then, getting the cap on and off with the hose stuck in it was not easy, especially with 8 pounds of water in the jug. After yet another year of playing with it, accidents with spillage and loss of syphon, i learned how best to restart the siphon by squeezing the hose in both hands to force air out of it till the weight of the water in the lower end of hose started pulling water out from a full jug and hose hugging the bottom. What might be considered frustration was part of the entertainment. So, you might want to stop this read here, because i am about to give an amazingly simple answer to nearly every jug siphon complication, keeping that feed secured at the bottom of the jug.
You need two, 2 plastic enema hose clamps! The first one opens toward the neck of the jug. The flat side stays out onto the side of the neck, while the hose and rounded clip side slide into the neck. It is easily adjusted and installed into new jugs. The weakness in this arrangement comes with the jug, sitting on a table, the hose can kink and seal off as it crests out over the clamp. Also a loose jug on a table becomes a liability as its contents are spreading and weighing in your belly. Your happy butt, holding and drinking and sucking up the recipe causes the jug to lose its footing with the draping hose sagging off one side and maybe tipping it off the table. “Oh,,,, S---t!” Getting a partner might be the ultimate, but getting a quality bag or hanging can might be next in order. But all i ever do is, tie or hang the jug.
( bind and sodomize your jug for best results )