You could have saved yourself the failure if you has used the tried and true closed top bag first.
My learning experience today wasn't that I couldn't get the club soda to flow. It flowed just fine. My only major learning point was that I thought I would feel roughly what you described as bubbles nibbling at my colon, which I was really looking forward to. Instead, if my interpretation is correct, after 1-1.5 quarts of excellent flow and mostly left sided feeling liquid which felt wonderful, something happened. I was adding more liquid and expecting the "bubble-nibbling" to start any minute. I suddenly could not stand the internal strictly left sided feelings of pain, whether from rapid volume expansion/pressure, acidity, or my general poor tolerance for colonic air. It had nothing to do with delivery as far as I could tell, as I had delivered exactly what I wanted up to 1.5 quarts and then intentionally stopped when the pain started.
For the sake of fun and sexual satisfaction, I'm sorry my experiment turned out differently than I expected, but as Edison used to say, paraphrasing, I haven't failed - I've learned ~2,000 ways to not build a light bulb .
My next enema experiment/experience will be just as educational I'm sure. And BTW, as far as sexual satisfaction from enema play, I'm sitting here on my recliner watching the last NFL game of the evening, my colon+rectum probably finally dry enough to wipe up.
Then I'll put in my favorite PurePlug Large (1.5") for the rest of the evening and overnight, as I turn my beloved Ohm speakers from the NFL to classical Christmas music as I start planning how to fool my children this year. I have a good deal of experience singing bass and playing First Bassoon inThe Messiah starting from high school. I need my full-blown Messiah fix this year, as I have several recordings and haven't started playing them yet. Now is when my kids find out that I used to be a real musician. After Messiah starts the other classical and jazz Christmas music. Oh, I do love my Ohms.