White "film" from CO2

get a small bottle, drill two holes slightly smaller in diameter than the tubing into the cap.
Force tubing through the cap, pull one line down to the bottom or half way, This line should connect to your bottle(s). Next line does not go down very far, only about an inch. This goes into your tank.

Fill bottle with water, do not cover both lines with water. Hook up, finished.

Isn't that kinda like, a, uh... "water pipe"?

*grew up with a stepbrother who was always making the things and getting caught.
 
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