Aquarium Filter Intake for Aqua One

thingiverse

So just picked up some new fish, a few skinny little Kuhli Loaches (https://en.wikipedia.org/wiki/Kuhli_loach), and two of them got sucked into the filter on the very first day! Out goes the old Aqua One filter with its narrow 2mm wide grill and in comes the new 3D printed filter with wider 1mm x 5mm openings. I enlarged it compared to the original so that there's better water flow, gave it a flat bottom, and straight walls for printing ease. As for the fish, incredibly they've made it through the trip into the filter and back to their tank.