Same, I used to use this IV bag adjacent thing with a rolling pinch clamp. It always clogged up and the tubing went rigid.before dossers came down in price and availability years ago, it was fairly common to gravity drip from a two liter bottle or gallon jug each night. It was scary trusting the knot tied in the airline tubing was done well enough to have a nice slow drip. Now i enjoy having a kalk reactor coupled with weekly water change.
old school budget friendly lol (from google image):
View attachment 50949
Peristaltic pumps are so much better.