Bubbler for etching tank

https://youtu.be/Fn9rDmVnshc

Etching with ferric chloride goes way faster if you're bubbling air through the etching solution. I know a regular air stone works, but why not make a 3D-printed thing that will do the same thing?

My print wasn't quite good, but the end product worked after all. It should work even better with a good filament and a well tuned printer, one that can fully print the 5.5mm air hose connector.