Quickly had to put together an air driven aquarium-filter.
 

Prints fairly quick on my ender3 v3 KE.

Recommend to print in clear PETG, PETG is food safe….but not all colorants are.

How to print it,

100% infill on filter-body and filter-pipe.

15-20% infill on filter-top and filter-spacer 

IMPORTANT!

In your slicer remove top and bottom layers for filter-top and filter-spacer (the filter wont work if you dont), that way the infill will be a great filter/grate…i used "Honeycomb as infill because I like the way it looks.