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Discussion Starter #1 (Edited)
I have a bit of extra tubing, so I decided to save me a few bucks and make my own bubble wall. Well.....air only comes out of the 1st hole :/ But if I angel the tubing upward, the air will flow up the tube and through the holes.....

 

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Discussion Starter #5
end is plugged when testing.
The holes are likely too big. It works a bit better when I turn the tubing upside down.
 

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You need to build up a little pressure in the tube to get the result you want. So smaller holes and / or more air volume is the key.
 
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