u/F2PBTW_YT

For anyone who might be interested and have a 3d printer at home, this is free for downloading and printing: https://makerworld.com/models/2985550?appSharePlatform=copy

I have almost completely swapped away from cardboard because they keep disintegrating, softening and making the place look horrible and damp. I created this design to easily clean the tank and it's also a lot easier to shake them off for filtering.

Enjoy, and hope this helps someone ☺️