Air Stone for Aquarium or Hydroponics

I made this Airstone. It works by altering small arcs, thus creating little holes. I used some 2 cent coins to weigh it down enough so it will sink to the bottom. However, you may get away with printing it at 100 % infill, as both PLA and PETG are denser than water (I did not test this though). 

I designed this with 0.6 and 0.4 mm nozzle in mind.

Layer height of 0.2 or 0.3 should both work as the arcs are 0.6 mm high. 

If you need another size, let me know or remix it yourself :)